diff --git a/application/History.php b/application/History.php
index bd5c1bf7..1be955c5 100644
--- a/application/History.php
+++ b/application/History.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli;
 
 use DateTime;
diff --git a/application/Languages.php b/application/Languages.php
index d83e0765..8d0e13c8 100644
--- a/application/Languages.php
+++ b/application/Languages.php
@@ -76,7 +76,8 @@ public function __construct($language, $conf)
             $this->language = $confLanguage;
         }
 
-        if (! extension_loaded('gettext')
+        if (
+            ! extension_loaded('gettext')
             || in_array($this->conf->get('translation.mode', 'auto'), ['auto', 'php'])
         ) {
             $this->initPhpTranslator();
@@ -98,7 +99,7 @@ protected function initGettextTranslator()
         $this->translator->loadDomain(self::DEFAULT_DOMAIN, 'inc/languages');
 
         // Default extension translation from the current theme
-        $themeTransFolder = rtrim($this->conf->get('raintpl_tpl'), '/') .'/'. $this->conf->get('theme') .'/language';
+        $themeTransFolder = rtrim($this->conf->get('raintpl_tpl'), '/') . '/' . $this->conf->get('theme') . '/language';
         if (is_dir($themeTransFolder)) {
             $this->translator->loadDomain($this->conf->get('theme'), $themeTransFolder, false);
         }
@@ -121,7 +122,7 @@ protected function initPhpTranslator()
         $translations = new Translations();
         // Core translations
         try {
-            $translations = $translations->addFromPoFile('inc/languages/'. $this->language .'/LC_MESSAGES/shaarli.po');
+            $translations = $translations->addFromPoFile('inc/languages/' . $this->language . '/LC_MESSAGES/shaarli.po');
             $translations->setDomain('shaarli');
             $this->translator->loadTranslations($translations);
         } catch (\InvalidArgumentException $e) {
@@ -129,11 +130,11 @@ protected function initPhpTranslator()
 
         // Default extension translation from the current theme
         $theme = $this->conf->get('theme');
-        $themeTransFolder = rtrim($this->conf->get('raintpl_tpl'), '/') .'/'. $theme .'/language';
+        $themeTransFolder = rtrim($this->conf->get('raintpl_tpl'), '/') . '/' . $theme . '/language';
         if (is_dir($themeTransFolder)) {
             try {
                 $translations = Translations::fromPoFile(
-                    $themeTransFolder .'/'. $this->language .'/LC_MESSAGES/'. $theme .'.po'
+                    $themeTransFolder . '/' . $this->language . '/LC_MESSAGES/' . $theme . '.po'
                 );
                 $translations->setDomain($theme);
                 $this->translator->loadTranslations($translations);
@@ -149,7 +150,7 @@ protected function initPhpTranslator()
 
             try {
                 $extension = Translations::fromPoFile(
-                    $translationPath . $this->language .'/LC_MESSAGES/'. $domain .'.po'
+                    $translationPath . $this->language . '/LC_MESSAGES/' . $domain . '.po'
                 );
                 $extension->setDomain($domain);
                 $this->translator->loadTranslations($extension);
diff --git a/application/Thumbnailer.php b/application/Thumbnailer.php
index 5aec23c8..30354310 100644
--- a/application/Thumbnailer.php
+++ b/application/Thumbnailer.php
@@ -60,7 +60,7 @@ public function __construct($conf)
             // TODO: create a proper error handling system able to catch exceptions...
             die(t(
                 'php-gd extension must be loaded to use thumbnails. '
-                .'Thumbnails are now disabled. Please reload the page.'
+                . 'Thumbnails are now disabled. Please reload the page.'
             ));
         }
 
@@ -81,7 +81,8 @@ public function __construct($conf)
      */
     public function get($url)
     {
-        if ($this->conf->get('thumbnails.mode') === self::MODE_COMMON
+        if (
+            $this->conf->get('thumbnails.mode') === self::MODE_COMMON
             && ! $this->isCommonMediaOrImage($url)
         ) {
             return false;
diff --git a/application/TimeZone.php b/application/TimeZone.php
index c1869ef8..a420eb96 100644
--- a/application/TimeZone.php
+++ b/application/TimeZone.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Generates a list of available timezone continents and cities.
  *
@@ -43,7 +44,7 @@ function generateTimeZoneData($installedTimeZones, $preselectedTimezone = '')
         // Try to split the provided timezone
         $spos = strpos($preselectedTimezone, '/');
         $pcontinent = substr($preselectedTimezone, 0, $spos);
-        $pcity = substr($preselectedTimezone, $spos+1);
+        $pcity = substr($preselectedTimezone, $spos + 1);
     }
 
     $continents = [];
@@ -60,7 +61,7 @@ function generateTimeZoneData($installedTimeZones, $preselectedTimezone = '')
         }
 
         $continent = substr($tz, 0, $spos);
-        $city = substr($tz, $spos+1);
+        $city = substr($tz, $spos + 1);
         $cities[] = ['continent' => $continent, 'city' => $city];
         $continents[$continent] = true;
     }
@@ -85,7 +86,7 @@ function generateTimeZoneData($installedTimeZones, $preselectedTimezone = '')
 function isTimeZoneValid($continent, $city)
 {
     return in_array(
-        $continent.'/'.$city,
+        $continent . '/' . $city,
         timezone_identifiers_list()
     );
 }
diff --git a/application/Utils.php b/application/Utils.php
index db046893..4c2d6701 100644
--- a/application/Utils.php
+++ b/application/Utils.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Shaarli utilities
  */
@@ -102,7 +103,7 @@ function escape($input)
     }
 
     if (is_array($input)) {
-        $out = array();
+        $out = [];
         foreach ($input as $key => $value) {
             $out[escape($key)] = escape($value);
         }
@@ -163,7 +164,7 @@ function checkDateFormat($format, $string)
  *
  * @return string $referer - final referer.
  */
-function generateLocation($referer, $host, $loopTerms = array())
+function generateLocation($referer, $host, $loopTerms = [])
 {
     $finalReferer = './?';
 
@@ -196,7 +197,7 @@ function generateLocation($referer, $host, $loopTerms = array())
 function autoLocale($headerLocale)
 {
     // Default if browser does not send HTTP_ACCEPT_LANGUAGE
-    $locales = array('en_US', 'en_US.utf8', 'en_US.UTF-8');
+    $locales = ['en_US', 'en_US.utf8', 'en_US.UTF-8'];
     if (! empty($headerLocale)) {
         if (preg_match_all('/([a-z]{2,3})[-_]?([a-z]{2})?,?/i', $headerLocale, $matches, PREG_SET_ORDER)) {
             $attempts = [];
@@ -376,7 +377,7 @@ function return_bytes($val)
         return $val;
     }
     $val = trim($val);
-    $last = strtolower($val[strlen($val)-1]);
+    $last = strtolower($val[strlen($val) - 1]);
     $val = intval(substr($val, 0, -1));
     switch ($last) {
         case 'g':
@@ -482,7 +483,9 @@ function alphabetical_sort(&$data, $reverse = false, $byKeys = false)
  */
 function t($text, $nText = '', $nb = 1, $domain = 'shaarli', $variables = [], $fixCase = false)
 {
-    $postFunction = $fixCase ? 'ucfirst' : function ($input) { return $input; };
+    $postFunction = $fixCase ? 'ucfirst' : function ($input) {
+        return $input;
+    };
 
     return $postFunction(dn__($domain, $text, $nText, $nb, $variables));
 }
@@ -494,4 +497,3 @@ function exception2text(Throwable $e): string
 {
     return $e->getMessage() . PHP_EOL . $e->getFile() . $e->getLine() . PHP_EOL . $e->getTraceAsString();
 }
-
diff --git a/application/api/ApiMiddleware.php b/application/api/ApiMiddleware.php
index adc8b266..9fb88358 100644
--- a/application/api/ApiMiddleware.php
+++ b/application/api/ApiMiddleware.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Api;
 
 use malkusch\lock\mutex\FlockMutex;
@@ -108,7 +109,8 @@ protected function checkRequest($request)
      */
     protected function checkToken($request)
     {
-        if (!$request->hasHeader('Authorization')
+        if (
+            !$request->hasHeader('Authorization')
             && !isset($this->container->environment['REDIRECT_HTTP_AUTHORIZATION'])
         ) {
             throw new ApiAuthorizationException('JWT token not provided');
diff --git a/application/api/ApiUtils.php b/application/api/ApiUtils.php
index eb1ca9bc..05a2840a 100644
--- a/application/api/ApiUtils.php
+++ b/application/api/ApiUtils.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Api;
 
 use Shaarli\Api\Exceptions\ApiAuthorizationException;
@@ -27,7 +28,7 @@ public static function validateJwtToken($token, $secret)
             throw new ApiAuthorizationException('Malformed JWT token');
         }
 
-        $genSign = Base64Url::encode(hash_hmac('sha512', $parts[0] .'.'. $parts[1], $secret, true));
+        $genSign = Base64Url::encode(hash_hmac('sha512', $parts[0] . '.' . $parts[1], $secret, true));
         if ($parts[2] != $genSign) {
             throw new ApiAuthorizationException('Invalid JWT signature');
         }
@@ -42,7 +43,8 @@ public static function validateJwtToken($token, $secret)
             throw new ApiAuthorizationException('Invalid JWT payload');
         }
 
-        if (empty($payload->iat)
+        if (
+            empty($payload->iat)
             || $payload->iat > time()
             || time() - $payload->iat > ApiMiddleware::$TOKEN_DURATION
         ) {
diff --git a/application/api/controllers/HistoryController.php b/application/api/controllers/HistoryController.php
index 505647a9..d83a3a25 100644
--- a/application/api/controllers/HistoryController.php
+++ b/application/api/controllers/HistoryController.php
@@ -1,6 +1,5 @@
 <?php
 
-
 namespace Shaarli\Api\Controllers;
 
 use Shaarli\Api\Exceptions\ApiBadParametersException;
diff --git a/application/api/controllers/Info.php b/application/api/controllers/Info.php
index 12f6b2f0..ae7db93e 100644
--- a/application/api/controllers/Info.php
+++ b/application/api/controllers/Info.php
@@ -29,13 +29,13 @@ public function getInfo($request, $response)
         $info = [
             'global_counter' => $this->bookmarkService->count(),
             'private_counter' => $this->bookmarkService->count(BookmarkFilter::$PRIVATE),
-            'settings' => array(
+            'settings' => [
                 'title' => $this->conf->get('general.title', 'Shaarli'),
                 'header_link' => $this->conf->get('general.header_link', '?'),
                 'timezone' => $this->conf->get('general.timezone', 'UTC'),
                 'enabled_plugins' => $this->conf->get('general.enabled_plugins', []),
                 'default_private_links' => $this->conf->get('privacy.default_private_links', false),
-            ),
+            ],
         ];
 
         return $response->withJson($info, 200, $this->jsonStyle);
diff --git a/application/api/controllers/Links.php b/application/api/controllers/Links.php
index 6bf529e4..c379b962 100644
--- a/application/api/controllers/Links.php
+++ b/application/api/controllers/Links.php
@@ -119,7 +119,8 @@ public function postLink($request, $response)
         $data = (array) ($request->getParsedBody() ?? []);
         $bookmark = ApiUtils::buildBookmarkFromRequest($data, $this->conf->get('privacy.default_private_links'));
         // duplicate by URL, return 409 Conflict
-        if (! empty($bookmark->getUrl())
+        if (
+            ! empty($bookmark->getUrl())
             && ! empty($dup = $this->bookmarkService->findByUrl($bookmark->getUrl()))
         ) {
             return $response->withJson(
@@ -159,7 +160,8 @@ public function putLink($request, $response, $args)
 
         $requestBookmark = ApiUtils::buildBookmarkFromRequest($data, $this->conf->get('privacy.default_private_links'));
         // duplicate URL on a different link, return 409 Conflict
-        if (! empty($requestBookmark->getUrl())
+        if (
+            ! empty($requestBookmark->getUrl())
             && ! empty($dup = $this->bookmarkService->findByUrl($requestBookmark->getUrl()))
             && $dup->getId() != $id
         ) {
diff --git a/application/api/exceptions/ApiAuthorizationException.php b/application/api/exceptions/ApiAuthorizationException.php
index 0e3f4776..c77e9eea 100644
--- a/application/api/exceptions/ApiAuthorizationException.php
+++ b/application/api/exceptions/ApiAuthorizationException.php
@@ -28,7 +28,7 @@ public function getApiResponse()
      */
     public function setMessage($message)
     {
-        $original = $this->debug === true ? ': '. $this->getMessage() : '';
+        $original = $this->debug === true ? ': ' . $this->getMessage() : '';
         $this->message = $message . $original;
     }
 }
diff --git a/application/api/exceptions/ApiException.php b/application/api/exceptions/ApiException.php
index d6b66323..7deafb96 100644
--- a/application/api/exceptions/ApiException.php
+++ b/application/api/exceptions/ApiException.php
@@ -44,7 +44,7 @@ protected function getApiResponseBody()
         }
         return [
             'message' => $this->getMessage(),
-            'stacktrace' => get_class($this) .': '. $this->getTraceAsString()
+            'stacktrace' => get_class($this) . ': ' . $this->getTraceAsString()
         ];
     }
 
diff --git a/application/bookmark/Bookmark.php b/application/bookmark/Bookmark.php
index 8aaeb9d8..b592722f 100644
--- a/application/bookmark/Bookmark.php
+++ b/application/bookmark/Bookmark.php
@@ -106,7 +106,8 @@ public function fromArray(array $data, string $tagsSeparator = ' '): Bookmark
      */
     public function validate(): void
     {
-        if ($this->id === null
+        if (
+            $this->id === null
             || ! is_int($this->id)
             || empty($this->shortUrl)
             || empty($this->created)
@@ -114,7 +115,7 @@ public function validate(): void
             throw new InvalidBookmarkException($this);
         }
         if (empty($this->url)) {
-            $this->url = '/shaare/'. $this->shortUrl;
+            $this->url = '/shaare/' . $this->shortUrl;
         }
         if (empty($this->title)) {
             $this->title = $this->url;
diff --git a/application/bookmark/BookmarkArray.php b/application/bookmark/BookmarkArray.php
index 67bb3b73..b9328116 100644
--- a/application/bookmark/BookmarkArray.php
+++ b/application/bookmark/BookmarkArray.php
@@ -72,7 +72,8 @@ public function count()
      */
     public function offsetSet($offset, $value)
     {
-        if (! $value instanceof Bookmark
+        if (
+            ! $value instanceof Bookmark
             || $value->getId() === null || empty($value->getUrl())
             || ($offset !== null && ! is_int($offset)) || ! is_int($value->getId())
             || $offset !== null && $offset !== $value->getId()
@@ -222,7 +223,8 @@ public function getNextId(): int
      */
     public function getByUrl(string $url): ?Bookmark
     {
-        if (! empty($url)
+        if (
+            ! empty($url)
             && isset($this->urls[$url])
             && isset($this->bookmarks[$this->urls[$url]])
         ) {
diff --git a/application/bookmark/BookmarkFileService.php b/application/bookmark/BookmarkFileService.php
index 85efeea6..66248cc2 100644
--- a/application/bookmark/BookmarkFileService.php
+++ b/application/bookmark/BookmarkFileService.php
@@ -69,7 +69,7 @@ public function __construct(ConfigManager $conf, History $history, Mutex $mutex,
         } else {
             try {
                 $this->bookmarks = $this->bookmarksIO->read();
-            } catch (EmptyDataStoreException|DatastoreNotInitializedException $e) {
+            } catch (EmptyDataStoreException | DatastoreNotInitializedException $e) {
                 $this->bookmarks = new BookmarkArray();
 
                 if ($this->isLoggedIn) {
@@ -85,7 +85,7 @@ public function __construct(ConfigManager $conf, History $history, Mutex $mutex,
             if (! $this->bookmarks instanceof BookmarkArray) {
                 $this->migrate();
                 exit(
-                    'Your data store has been migrated, please reload the page.'. PHP_EOL .
+                    'Your data store has been migrated, please reload the page.' . PHP_EOL .
                     'If this message keeps showing up, please delete data/updates.txt file.'
                 );
             }
@@ -102,7 +102,8 @@ public function findByHash(string $hash, string $privateKey = null): Bookmark
         $bookmark = $this->bookmarkFilter->filter(BookmarkFilter::$FILTER_HASH, $hash);
         // PHP 7.3 introduced array_key_first() to avoid this hack
         $first = reset($bookmark);
-        if (!$this->isLoggedIn
+        if (
+            !$this->isLoggedIn
             && $first->isPrivate()
             && (empty($privateKey) || $privateKey !== $first->getAdditionalContentEntry('private_key'))
         ) {
@@ -165,7 +166,8 @@ public function get(int $id, string $visibility = null): Bookmark
         }
 
         $bookmark = $this->bookmarks[$id];
-        if (($bookmark->isPrivate() && $visibility != 'all' && $visibility != 'private')
+        if (
+            ($bookmark->isPrivate() && $visibility != 'all' && $visibility != 'private')
             || (! $bookmark->isPrivate() && $visibility != 'all' && $visibility != 'public')
         ) {
             throw new Exception('Unauthorized');
@@ -265,7 +267,8 @@ public function exists(int $id, string $visibility = null): bool
         }
 
         $bookmark = $this->bookmarks[$id];
-        if (($bookmark->isPrivate() && $visibility != 'all' && $visibility != 'private')
+        if (
+            ($bookmark->isPrivate() && $visibility != 'all' && $visibility != 'private')
             || (! $bookmark->isPrivate() && $visibility != 'all' && $visibility != 'public')
         ) {
             return false;
@@ -307,7 +310,8 @@ public function bookmarksCountPerTag(array $filteringTags = [], string $visibili
         $caseMapping = [];
         foreach ($bookmarks as $bookmark) {
             foreach ($bookmark->getTags() as $tag) {
-                if (empty($tag)
+                if (
+                    empty($tag)
                     || (! $this->isLoggedIn && startsWith($tag, '.'))
                     || $tag === BookmarkMarkdownFormatter::NO_MD_TAG
                     || in_array($tag, $filteringTags, true)
@@ -356,7 +360,7 @@ public function findByDate(
         foreach ($this->search([], null, false, false, true) as $bookmark) {
             if ($to < $bookmark->getCreated()) {
                 $next = $bookmark->getCreated();
-            } else if ($from < $bookmark->getCreated() && $to > $bookmark->getCreated()) {
+            } elseif ($from < $bookmark->getCreated() && $to > $bookmark->getCreated()) {
                 $out[] = $bookmark;
             } else {
                 if ($previous !== null) {
diff --git a/application/bookmark/BookmarkFilter.php b/application/bookmark/BookmarkFilter.php
index 5d8733dc..db83c51c 100644
--- a/application/bookmark/BookmarkFilter.php
+++ b/application/bookmark/BookmarkFilter.php
@@ -150,7 +150,7 @@ private function noFilter(string $visibility = 'all')
             return $this->bookmarks;
         }
 
-        $out = array();
+        $out = [];
         foreach ($this->bookmarks as $key => $value) {
             if ($value->isPrivate() && $visibility === 'private') {
                 $out[$key] = $value;
@@ -395,7 +395,7 @@ public function filterTags($tags, bool $casesensitive = false, string $visibilit
             $search = $link->getTagsString($tagsSeparator);
             if (strlen(trim($link->getDescription())) && strpos($link->getDescription(), '#') !== false) {
                 // description given and at least one possible tag found
-                $descTags = array();
+                $descTags = [];
                 // find all tags in the form of #tag in the description
                 preg_match_all(
                     '/(?<![' . self::$HASHTAG_CHARS . '])#([' . self::$HASHTAG_CHARS . ']+?)\b/sm',
@@ -552,10 +552,10 @@ protected function postProcessFoundPositions(array $fieldLengths, array $foundPo
     protected function buildFullTextSearchableLink(Bookmark $link, array &$lengths): string
     {
         $tagString = $link->getTagsString($this->conf->get('general.tags_separator', ' '));
-        $content  = mb_convert_case($link->getTitle(), MB_CASE_LOWER, 'UTF-8') .'\\';
-        $content .= mb_convert_case($link->getDescription(), MB_CASE_LOWER, 'UTF-8') .'\\';
-        $content .= mb_convert_case($link->getUrl(), MB_CASE_LOWER, 'UTF-8') .'\\';
-        $content .= mb_convert_case($tagString, MB_CASE_LOWER, 'UTF-8') .'\\';
+        $content  = mb_convert_case($link->getTitle(), MB_CASE_LOWER, 'UTF-8') . '\\';
+        $content .= mb_convert_case($link->getDescription(), MB_CASE_LOWER, 'UTF-8') . '\\';
+        $content .= mb_convert_case($link->getUrl(), MB_CASE_LOWER, 'UTF-8') . '\\';
+        $content .= mb_convert_case($tagString, MB_CASE_LOWER, 'UTF-8') . '\\';
 
         $lengths['title'] = ['start' => 0, 'end' => mb_strlen($link->getTitle())];
         $nextField = $lengths['title']['end'] + 1;
diff --git a/application/bookmark/BookmarkIO.php b/application/bookmark/BookmarkIO.php
index f40fa476..c78dbe41 100644
--- a/application/bookmark/BookmarkIO.php
+++ b/application/bookmark/BookmarkIO.php
@@ -112,12 +112,12 @@ public function write($links)
         if (is_file($this->datastore) && !is_writeable($this->datastore)) {
             // The datastore exists but is not writeable
             throw new NotWritableDataStoreException($this->datastore);
-        } else if (!is_file($this->datastore) && !is_writeable(dirname($this->datastore))) {
+        } elseif (!is_file($this->datastore) && !is_writeable(dirname($this->datastore))) {
             // The datastore does not exist and its parent directory is not writeable
             throw new NotWritableDataStoreException(dirname($this->datastore));
         }
 
-        $data = self::$phpPrefix.base64_encode(gzdeflate(serialize($links))).self::$phpSuffix;
+        $data = self::$phpPrefix . base64_encode(gzdeflate(serialize($links))) . self::$phpSuffix;
 
         $this->mutex->synchronized(function () use ($data) {
             file_put_contents(
diff --git a/application/bookmark/BookmarkInitializer.php b/application/bookmark/BookmarkInitializer.php
index 98dd3f1c..2240f58c 100644
--- a/application/bookmark/BookmarkInitializer.php
+++ b/application/bookmark/BookmarkInitializer.php
@@ -39,7 +39,7 @@ public function initialize(): void
         $bookmark->setTitle('Calm Jazz Music - YouTube ' . t('(private bookmark with thumbnail demo)'));
         $bookmark->setUrl('https://www.youtube.com/watch?v=DVEUcbPkb-c');
         $bookmark->setDescription(t(
-'Shaarli will automatically pick up the thumbnail for links to a variety of websites.
+            'Shaarli will automatically pick up the thumbnail for links to a variety of websites.
 
 Explore your new Shaarli instance by trying out controls and menus.
 Visit the project on [Github](https://github.com/shaarli/Shaarli) or [the documentation](https://shaarli.readthedocs.io/en/master/) to learn more about Shaarli.
@@ -54,7 +54,7 @@ public function initialize(): void
         $bookmark = new Bookmark();
         $bookmark->setTitle(t('Note: Shaare descriptions'));
         $bookmark->setDescription(t(
-'Adding a shaare without entering a URL creates a text-only "note" post such as this one.
+            'Adding a shaare without entering a URL creates a text-only "note" post such as this one.
 This note is private, so you are the only one able to see it while logged in.
 
 You can use this to keep notes, post articles, code snippets, and much more.
@@ -91,7 +91,7 @@ public function initialize(): void
             'Shaarli - ' . t('The personal, minimalist, super-fast, database free, bookmarking service')
         );
         $bookmark->setDescription(t(
-'Welcome to Shaarli!
+            'Welcome to Shaarli!
 
 Shaarli allows you to bookmark your favorite pages, and share them with others or store them privately.
 You can add a description to your bookmarks, such as this one, and tag them.
diff --git a/application/bookmark/LinkUtils.php b/application/bookmark/LinkUtils.php
index cf97e3b0..d65e97ed 100644
--- a/application/bookmark/LinkUtils.php
+++ b/application/bookmark/LinkUtils.php
@@ -67,14 +67,15 @@ function html_extract_tag($tag, $html)
     $propertiesKey = ['property', 'name', 'itemprop'];
     $properties = implode('|', $propertiesKey);
     // We need a OR here to accept either 'property=og:noquote' or 'property="og:unrelated og:my-tag"'
-    $orCondition  = '["\']?(?:og:)?'. $tag .'["\']?|["\'][^\'"]*?(?:og:)?' . $tag . '[^\'"]*?[\'"]';
+    $orCondition  = '["\']?(?:og:)?' . $tag . '["\']?|["\'][^\'"]*?(?:og:)?' . $tag . '[^\'"]*?[\'"]';
     // Try to retrieve OpenGraph tag.
-    $ogRegex = '#<meta[^>]+(?:'. $properties .')=(?:'. $orCondition .')[^>]*content=(["\'])([^\1]*?)\1.*?>#';
+    $ogRegex = '#<meta[^>]+(?:' . $properties . ')=(?:' . $orCondition . ')[^>]*content=(["\'])([^\1]*?)\1.*?>#';
     // If the attributes are not in the order property => content (e.g. Github)
     // New regex to keep this readable... more or less.
-    $ogRegexReverse = '#<meta[^>]+content=(["\'])([^\1]*?)\1[^>]+(?:'. $properties .')=(?:'. $orCondition .').*?>#';
+    $ogRegexReverse = '#<meta[^>]+content=(["\'])([^\1]*?)\1[^>]+(?:' . $properties . ')=(?:' . $orCondition . ').*?>#';
 
-    if (preg_match($ogRegex, $html, $matches) > 0
+    if (
+        preg_match($ogRegex, $html, $matches) > 0
         || preg_match($ogRegexReverse, $html, $matches) > 0
     ) {
         return $matches[2];
@@ -116,7 +117,7 @@ function hashtag_autolink($description, $indexUrl = '')
      * \p{Mn} - any non marking space (accents, umlauts, etc)
      */
     $regex = '/(^|\s)#([\p{Pc}\p{N}\p{L}\p{Mn}]+)/mui';
-    $replacement = '$1<a href="'. $indexUrl .'./add-tag/$2" title="Hashtag $2">#$2</a>';
+    $replacement = '$1<a href="' . $indexUrl . './add-tag/$2" title="Hashtag $2">#$2</a>';
     return preg_replace($regex, $replacement, $description);
 }
 
diff --git a/application/bookmark/exception/BookmarkNotFoundException.php b/application/bookmark/exception/BookmarkNotFoundException.php
index 827a3d35..a91d1efa 100644
--- a/application/bookmark/exception/BookmarkNotFoundException.php
+++ b/application/bookmark/exception/BookmarkNotFoundException.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Bookmark\Exception;
 
 use Exception;
diff --git a/application/bookmark/exception/EmptyDataStoreException.php b/application/bookmark/exception/EmptyDataStoreException.php
index cd48c1e6..16a98470 100644
--- a/application/bookmark/exception/EmptyDataStoreException.php
+++ b/application/bookmark/exception/EmptyDataStoreException.php
@@ -1,7 +1,7 @@
 <?php
 
-
 namespace Shaarli\Bookmark\Exception;
 
-
-class EmptyDataStoreException extends \Exception {}
+class EmptyDataStoreException extends \Exception
+{
+}
diff --git a/application/bookmark/exception/InvalidBookmarkException.php b/application/bookmark/exception/InvalidBookmarkException.php
index 10c84a6d..fe184f8c 100644
--- a/application/bookmark/exception/InvalidBookmarkException.php
+++ b/application/bookmark/exception/InvalidBookmarkException.php
@@ -16,14 +16,14 @@ public function __construct($bookmark)
             } else {
                 $created = 'Not a DateTime object';
             }
-            $this->message = 'This bookmark is not valid'. PHP_EOL;
-            $this->message .= ' - ID: '. $bookmark->getId() . PHP_EOL;
-            $this->message .= ' - Title: '. $bookmark->getTitle() . PHP_EOL;
-            $this->message .= ' - Url: '. $bookmark->getUrl() . PHP_EOL;
-            $this->message .= ' - ShortUrl: '. $bookmark->getShortUrl() . PHP_EOL;
-            $this->message .= ' - Created: '. $created . PHP_EOL;
+            $this->message = 'This bookmark is not valid' . PHP_EOL;
+            $this->message .= ' - ID: ' . $bookmark->getId() . PHP_EOL;
+            $this->message .= ' - Title: ' . $bookmark->getTitle() . PHP_EOL;
+            $this->message .= ' - Url: ' . $bookmark->getUrl() . PHP_EOL;
+            $this->message .= ' - ShortUrl: ' . $bookmark->getShortUrl() . PHP_EOL;
+            $this->message .= ' - Created: ' . $created . PHP_EOL;
         } else {
-            $this->message = 'The provided data is not a bookmark'. PHP_EOL;
+            $this->message = 'The provided data is not a bookmark' . PHP_EOL;
             $this->message .= var_export($bookmark, true);
         }
     }
diff --git a/application/bookmark/exception/NotWritableDataStoreException.php b/application/bookmark/exception/NotWritableDataStoreException.php
index 95f34b50..df91f3bc 100644
--- a/application/bookmark/exception/NotWritableDataStoreException.php
+++ b/application/bookmark/exception/NotWritableDataStoreException.php
@@ -1,9 +1,7 @@
 <?php
 
-
 namespace Shaarli\Bookmark\Exception;
 
-
 class NotWritableDataStoreException extends \Exception
 {
     /**
@@ -13,7 +11,7 @@ class NotWritableDataStoreException extends \Exception
      */
     public function __construct($dataStore)
     {
-        $this->message = 'Couldn\'t load data from the data store file "'. $dataStore .'". '.
+        $this->message = 'Couldn\'t load data from the data store file "' . $dataStore . '". ' .
             'Your data might be corrupted, or your file isn\'t readable.';
     }
 }
diff --git a/application/config/ConfigIO.php b/application/config/ConfigIO.php
index 3efe5b6f..a623bc8b 100644
--- a/application/config/ConfigIO.php
+++ b/application/config/ConfigIO.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Config;
 
 /**
diff --git a/application/config/ConfigManager.php b/application/config/ConfigManager.php
index a035baae..a0acc94d 100644
--- a/application/config/ConfigManager.php
+++ b/application/config/ConfigManager.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Config;
 
 use Shaarli\Config\Exception\MissingFieldConfigException;
@@ -20,7 +21,7 @@ class ConfigManager
      */
     protected static $NOT_FOUND = 'NOT_FOUND';
 
-    public static $DEFAULT_PLUGINS = array('qrcode');
+    public static $DEFAULT_PLUGINS = ['qrcode'];
 
     /**
      * @var string Config folder.
@@ -133,7 +134,7 @@ public function get($setting, $default = '')
     public function set($setting, $value, $write = false, $isLoggedIn = false)
     {
         if (empty($setting) || ! is_string($setting)) {
-            throw new \Exception(t('Invalid setting key parameter. String expected, got: '). gettype($setting));
+            throw new \Exception(t('Invalid setting key parameter. String expected, got: ') . gettype($setting));
         }
 
         // During the ConfigIO transition, map legacy settings to the new ones.
@@ -160,7 +161,7 @@ public function set($setting, $value, $write = false, $isLoggedIn = false)
     public function remove($setting, $write = false, $isLoggedIn = false)
     {
         if (empty($setting) || ! is_string($setting)) {
-            throw new \Exception(t('Invalid setting key parameter. String expected, got: '). gettype($setting));
+            throw new \Exception(t('Invalid setting key parameter. String expected, got: ') . gettype($setting));
         }
 
         // During the ConfigIO transition, map legacy settings to the new ones.
@@ -213,7 +214,7 @@ public function exists($setting)
     public function write($isLoggedIn)
     {
         // These fields are required in configuration.
-        $mandatoryFields = array(
+        $mandatoryFields = [
             'credentials.login',
             'credentials.hash',
             'credentials.salt',
@@ -222,7 +223,7 @@ public function write($isLoggedIn)
             'general.title',
             'general.header_link',
             'privacy.default_private_links',
-        );
+        ];
 
         // Only logged in user can alter config.
         if (is_file($this->getConfigFileExt()) && !$isLoggedIn) {
@@ -392,7 +393,7 @@ protected function setDefaultValues()
         $this->setEmpty('translation.mode', 'php');
         $this->setEmpty('translation.extensions', []);
 
-        $this->setEmpty('plugins', array());
+        $this->setEmpty('plugins', []);
 
         $this->setEmpty('formatter', 'markdown');
     }
diff --git a/application/config/ConfigPhp.php b/application/config/ConfigPhp.php
index cad34594..53d6a7a3 100644
--- a/application/config/ConfigPhp.php
+++ b/application/config/ConfigPhp.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Config;
 
 /**
@@ -12,7 +13,7 @@ class ConfigPhp implements ConfigIO
     /**
      * @var array List of config key without group.
      */
-    public static $ROOT_KEYS = array(
+    public static $ROOT_KEYS = [
         'login',
         'hash',
         'salt',
@@ -22,7 +23,7 @@ class ConfigPhp implements ConfigIO
         'redirector',
         'disablesessionprotection',
         'privateLinkByDefault',
-    );
+    ];
 
     /**
      * Map legacy config keys with the new ones.
@@ -31,7 +32,7 @@ class ConfigPhp implements ConfigIO
      *
      * @var array current key => legacy key.
      */
-    public static $LEGACY_KEYS_MAPPING = array(
+    public static $LEGACY_KEYS_MAPPING = [
         'credentials.login' => 'login',
         'credentials.hash' => 'hash',
         'credentials.salt' => 'salt',
@@ -68,7 +69,7 @@ class ConfigPhp implements ConfigIO
         'privacy.hide_public_links' => 'config.HIDE_PUBLIC_LINKS',
         'privacy.hide_timestamps' => 'config.HIDE_TIMESTAMPS',
         'security.open_shaarli' => 'config.OPEN_SHAARLI',
-    );
+    ];
 
     /**
      * @inheritdoc
@@ -76,12 +77,12 @@ class ConfigPhp implements ConfigIO
     public function read($filepath)
     {
         if (! file_exists($filepath) || ! is_readable($filepath)) {
-            return array();
+            return [];
         }
 
         include $filepath;
 
-        $out = array();
+        $out = [];
         foreach (self::$ROOT_KEYS as $key) {
             $out[$key] = isset($GLOBALS[$key]) ? $GLOBALS[$key] : '';
         }
@@ -95,7 +96,7 @@ public function read($filepath)
      */
     public function write($filepath, $conf)
     {
-        $configStr = '<?php '. PHP_EOL;
+        $configStr = '<?php ' . PHP_EOL;
         foreach (self::$ROOT_KEYS as $key) {
             if (isset($conf[$key])) {
                 $configStr .= '$GLOBALS[\'' . $key . '\'] = ' . var_export($conf[$key], true) . ';' . PHP_EOL;
@@ -106,8 +107,8 @@ public function write($filepath, $conf)
         foreach ($conf['config'] as $key => $value) {
             $configStr .= '$GLOBALS[\'config\'][\''
                 . $key
-                .'\'] = '
-                .var_export($conf['config'][$key], true).';'
+                . '\'] = '
+                . var_export($conf['config'][$key], true) . ';'
                 . PHP_EOL;
         }
 
@@ -115,18 +116,19 @@ public function write($filepath, $conf)
             foreach ($conf['plugins'] as $key => $value) {
                 $configStr .= '$GLOBALS[\'plugins\'][\''
                     . $key
-                    .'\'] = '
-                    .var_export($conf['plugins'][$key], true).';'
+                    . '\'] = '
+                    . var_export($conf['plugins'][$key], true) . ';'
                     . PHP_EOL;
             }
         }
 
-        if (!file_put_contents($filepath, $configStr)
+        if (
+            !file_put_contents($filepath, $configStr)
             || strcmp(file_get_contents($filepath), $configStr) != 0
         ) {
             throw new \Shaarli\Exceptions\IOException(
                 $filepath,
-                t('Shaarli could not create the config file. '.
+                t('Shaarli could not create the config file. ' .
                   'Please make sure Shaarli has the right to write in the folder is it installed in.')
             );
         }
diff --git a/application/config/ConfigPlugin.php b/application/config/ConfigPlugin.php
index ea8dfbda..6cadef12 100644
--- a/application/config/ConfigPlugin.php
+++ b/application/config/ConfigPlugin.php
@@ -39,8 +39,8 @@ function ($value, string $key) use ($directories) {
         throw new PluginConfigOrderException();
     }
 
-    $plugins = array();
-    $newEnabledPlugins = array();
+    $plugins = [];
+    $newEnabledPlugins = [];
     foreach ($formData as $key => $data) {
         if (startsWith($key, 'order')) {
             continue;
@@ -62,7 +62,7 @@ function ($value, string $key) use ($directories) {
         throw new PluginConfigOrderException();
     }
 
-    $finalPlugins = array();
+    $finalPlugins = [];
     // Make plugins order continuous.
     foreach ($plugins as $plugin) {
         $finalPlugins[] = $plugin;
@@ -81,7 +81,7 @@ function ($value, string $key) use ($directories) {
  */
 function validate_plugin_order($formData)
 {
-    $orders = array();
+    $orders = [];
     foreach ($formData as $key => $value) {
         // No duplicate order allowed.
         if (in_array($value, $orders, true)) {
diff --git a/application/config/exception/MissingFieldConfigException.php b/application/config/exception/MissingFieldConfigException.php
index 9e0a9359..a5f4356a 100644
--- a/application/config/exception/MissingFieldConfigException.php
+++ b/application/config/exception/MissingFieldConfigException.php
@@ -1,6 +1,5 @@
 <?php
 
-
 namespace Shaarli\Config\Exception;
 
 /**
diff --git a/application/config/exception/UnauthorizedConfigException.php b/application/config/exception/UnauthorizedConfigException.php
index 72311fae..b041c6e3 100644
--- a/application/config/exception/UnauthorizedConfigException.php
+++ b/application/config/exception/UnauthorizedConfigException.php
@@ -1,6 +1,5 @@
 <?php
 
-
 namespace Shaarli\Config\Exception;
 
 /**
diff --git a/application/exceptions/IOException.php b/application/exceptions/IOException.php
index 2aa25e5c..c1a9ffbe 100644
--- a/application/exceptions/IOException.php
+++ b/application/exceptions/IOException.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Exceptions;
 
 use Exception;
diff --git a/application/feed/FeedBuilder.php b/application/feed/FeedBuilder.php
index f70fce4f..ed62af26 100644
--- a/application/feed/FeedBuilder.php
+++ b/application/feed/FeedBuilder.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Feed;
 
 use DateTime;
@@ -107,14 +108,14 @@ public function buildData(string $feedType, ?array $userInput)
         $nblinksToDisplay = $this->getNbLinks(count($linksToDisplay), $userInput);
 
         // Can't use array_keys() because $link is a LinkDB instance and not a real array.
-        $keys = array();
+        $keys = [];
         foreach ($linksToDisplay as $key => $value) {
             $keys[] = $key;
         }
 
         $pageaddr = escape(index_url($this->serverInfo));
         $this->formatter->addContextData('index_url', $pageaddr);
-        $linkDisplayed = array();
+        $linkDisplayed = [];
         for ($i = 0; $i < $nblinksToDisplay && $i < count($keys); $i++) {
             $linkDisplayed[$keys[$i]] = $this->buildItem($feedType, $linksToDisplay[$keys[$i]], $pageaddr);
         }
@@ -176,9 +177,9 @@ protected function buildItem(string $feedType, $link, $pageaddr)
         $data = $this->formatter->format($link);
         $data['guid'] = rtrim($pageaddr, '/') . '/shaare/' . $data['shorturl'];
         if ($this->usePermalinks === true) {
-            $permalink = '<a href="'. $data['url'] .'" title="'. t('Direct link') .'">'. t('Direct link') .'</a>';
+            $permalink = '<a href="' . $data['url'] . '" title="' . t('Direct link') . '">' . t('Direct link') . '</a>';
         } else {
-            $permalink = '<a href="'. $data['guid'] .'" title="'. t('Permalink') .'">'. t('Permalink') .'</a>';
+            $permalink = '<a href="' . $data['guid'] . '" title="' . t('Permalink') . '">' . t('Permalink') . '</a>';
         }
         $data['description'] .= PHP_EOL . PHP_EOL . '<br>&#8212; ' . $permalink;
 
diff --git a/application/formatter/BookmarkMarkdownFormatter.php b/application/formatter/BookmarkMarkdownFormatter.php
index f7714be9..052333ca 100644
--- a/application/formatter/BookmarkMarkdownFormatter.php
+++ b/application/formatter/BookmarkMarkdownFormatter.php
@@ -71,7 +71,7 @@ public function formatDescription($bookmark)
         $processedDescription = $this->replaceTokens($processedDescription);
 
         if (!empty($processedDescription)) {
-            $processedDescription = '<div class="markdown">'. $processedDescription . '</div>';
+            $processedDescription = '<div class="markdown">' . $processedDescription . '</div>';
         }
 
         return $processedDescription;
@@ -110,7 +110,7 @@ protected function filterProtocols($description)
             function ($match) use ($allowedProtocols, $indexUrl) {
                 $link = startsWith($match[1], '?') || startsWith($match[1], '/') ? $indexUrl : '';
                 $link .= whitelist_protocols($match[1], $allowedProtocols);
-                return ']('. $link.')';
+                return '](' . $link . ')';
             },
             $description
         );
@@ -137,7 +137,7 @@ protected function formatHashTags($description)
          * \p{Mn} - any non marking space (accents, umlauts, etc)
          */
         $regex = '/(^|\s)#([\p{Pc}\p{N}\p{L}\p{Mn}]+)/mui';
-        $replacement = '$1[#$2]('. $indexUrl .'./add-tag/$2)';
+        $replacement = '$1[#$2](' . $indexUrl . './add-tag/$2)';
 
         $descriptionLines = explode(PHP_EOL, $description);
         $descriptionOut = '';
@@ -178,17 +178,17 @@ protected function formatHashTags($description)
      */
     protected function sanitizeHtml($description)
     {
-        $escapeTags = array(
+        $escapeTags = [
             'script',
             'style',
             'link',
             'iframe',
             'frameset',
             'frame',
-        );
+        ];
         foreach ($escapeTags as $tag) {
             $description = preg_replace_callback(
-                '#<\s*'. $tag .'[^>]*>(.*</\s*'. $tag .'[^>]*>)?#is',
+                '#<\s*' . $tag . '[^>]*>(.*</\s*' . $tag . '[^>]*>)?#is',
                 function ($match) {
                     return escape($match[0]);
                 },
diff --git a/application/formatter/BookmarkRawFormatter.php b/application/formatter/BookmarkRawFormatter.php
index bc372273..4ff07cdf 100644
--- a/application/formatter/BookmarkRawFormatter.php
+++ b/application/formatter/BookmarkRawFormatter.php
@@ -10,4 +10,6 @@
  *
  * @package Shaarli\Formatter
  */
-class BookmarkRawFormatter extends BookmarkFormatter {}
+class BookmarkRawFormatter extends BookmarkFormatter
+{
+}
diff --git a/application/formatter/FormatterFactory.php b/application/formatter/FormatterFactory.php
index a029579f..bb865aed 100644
--- a/application/formatter/FormatterFactory.php
+++ b/application/formatter/FormatterFactory.php
@@ -41,7 +41,7 @@ public function __construct(ConfigManager $conf, bool $isLoggedIn)
     public function getFormatter(string $type = null): BookmarkFormatter
     {
         $type = $type ? $type : $this->conf->get('formatter', 'default');
-        $className = '\\Shaarli\\Formatter\\Bookmark'. ucfirst($type) .'Formatter';
+        $className = '\\Shaarli\\Formatter\\Bookmark' . ucfirst($type) . 'Formatter';
         if (!class_exists($className)) {
             $className = '\\Shaarli\\Formatter\\BookmarkDefaultFormatter';
         }
diff --git a/application/front/ShaarliMiddleware.php b/application/front/ShaarliMiddleware.php
index d1aa1399..164217f4 100644
--- a/application/front/ShaarliMiddleware.php
+++ b/application/front/ShaarliMiddleware.php
@@ -42,7 +42,8 @@ public function __invoke(Request $request, Response $response, callable $next):
         $this->initBasePath($request);
 
         try {
-            if (!is_file($this->container->conf->getConfigFileExt())
+            if (
+                !is_file($this->container->conf->getConfigFileExt())
                 && !in_array($next->getName(), ['displayInstall', 'saveInstall'], true)
             ) {
                 return $response->withRedirect($this->container->basePath . '/install');
@@ -86,7 +87,8 @@ protected function runUpdates(): void
      */
     protected function checkOpenShaarli(Request $request, Response $response, callable $next): bool
     {
-        if (// if the user isn't logged in
+        if (
+// if the user isn't logged in
             !$this->container->loginManager->isLoggedIn()
             // and Shaarli doesn't have public content...
             && $this->container->conf->get('privacy.hide_public_links')
diff --git a/application/front/controller/admin/ConfigureController.php b/application/front/controller/admin/ConfigureController.php
index 0ed7ad81..eb26ef21 100644
--- a/application/front/controller/admin/ConfigureController.php
+++ b/application/front/controller/admin/ConfigureController.php
@@ -51,7 +51,7 @@ public function index(Request $request, Response $response): Response
         $this->assignView('languages', Languages::getAvailableLanguages());
         $this->assignView('gd_enabled', extension_loaded('gd'));
         $this->assignView('thumbnails_mode', $this->container->conf->get('thumbnails.mode', Thumbnailer::MODE_NONE));
-        $this->assignView('pagetitle', t('Configure') .' - '. $this->container->conf->get('general.title', 'Shaarli'));
+        $this->assignView('pagetitle', t('Configure') . ' - ' . $this->container->conf->get('general.title', 'Shaarli'));
 
         return $response->write($this->render(TemplatePage::CONFIGURE));
     }
@@ -95,12 +95,13 @@ public function save(Request $request, Response $response): Response
         }
 
         $thumbnailsMode = extension_loaded('gd') ? $request->getParam('enableThumbnails') : Thumbnailer::MODE_NONE;
-        if ($thumbnailsMode !== Thumbnailer::MODE_NONE
+        if (
+            $thumbnailsMode !== Thumbnailer::MODE_NONE
             && $thumbnailsMode !== $this->container->conf->get('thumbnails.mode', Thumbnailer::MODE_NONE)
         ) {
             $this->saveWarningMessage(
                 t('You have enabled or changed thumbnails mode.') .
-                '<a href="'. $this->container->basePath .'/admin/thumbnails">' . t('Please synchronize them.') .'</a>'
+                '<a href="' . $this->container->basePath . '/admin/thumbnails">' . t('Please synchronize them.') . '</a>'
             );
         }
         $this->container->conf->set('thumbnails.mode', $thumbnailsMode);
diff --git a/application/front/controller/admin/ExportController.php b/application/front/controller/admin/ExportController.php
index 2be957fa..f01d7e9b 100644
--- a/application/front/controller/admin/ExportController.php
+++ b/application/front/controller/admin/ExportController.php
@@ -23,7 +23,7 @@ class ExportController extends ShaarliAdminController
      */
     public function index(Request $request, Response $response): Response
     {
-        $this->assignView('pagetitle', t('Export') .' - '. $this->container->conf->get('general.title', 'Shaarli'));
+        $this->assignView('pagetitle', t('Export') . ' - ' . $this->container->conf->get('general.title', 'Shaarli'));
 
         return $response->write($this->render(TemplatePage::EXPORT));
     }
@@ -68,7 +68,7 @@ public function export(Request $request, Response $response): Response
         $response = $response->withHeader('Content-Type', 'text/html; charset=utf-8');
         $response = $response->withHeader(
             'Content-disposition',
-            'attachment; filename=bookmarks_'.$selection.'_'.$now->format(Bookmark::LINK_DATE_FORMAT).'.html'
+            'attachment; filename=bookmarks_' . $selection . '_' . $now->format(Bookmark::LINK_DATE_FORMAT) . '.html'
         );
 
         $this->assignView('date', $now->format(DateTime::RFC822));
diff --git a/application/front/controller/admin/ImportController.php b/application/front/controller/admin/ImportController.php
index 758d5ef9..c2ad6a09 100644
--- a/application/front/controller/admin/ImportController.php
+++ b/application/front/controller/admin/ImportController.php
@@ -38,7 +38,7 @@ public function index(Request $request, Response $response): Response
                 true
             )
         );
-        $this->assignView('pagetitle', t('Import') .' - '. $this->container->conf->get('general.title', 'Shaarli'));
+        $this->assignView('pagetitle', t('Import') . ' - ' . $this->container->conf->get('general.title', 'Shaarli'));
 
         return $response->write($this->render(TemplatePage::IMPORT));
     }
@@ -64,7 +64,7 @@ public function import(Request $request, Response $response): Response
             $msg = sprintf(
                 t(
                     'The file you are trying to upload is probably bigger than what this webserver can accept'
-                    .' (%s). Please upload in smaller chunks.'
+                    . ' (%s). Please upload in smaller chunks.'
                 ),
                 get_max_upload_size(ini_get('post_max_size'), ini_get('upload_max_filesize'))
             );
diff --git a/application/front/controller/admin/ManageTagController.php b/application/front/controller/admin/ManageTagController.php
index 22fb461c..8675a0c5 100644
--- a/application/front/controller/admin/ManageTagController.php
+++ b/application/front/controller/admin/ManageTagController.php
@@ -32,7 +32,7 @@ public function index(Request $request, Response $response): Response
         $this->assignView('tags_separator', $separator);
         $this->assignView(
             'pagetitle',
-            t('Manage tags') .' - '. $this->container->conf->get('general.title', 'Shaarli')
+            t('Manage tags') . ' - ' . $this->container->conf->get('general.title', 'Shaarli')
         );
 
         return $response->write($this->render(TemplatePage::CHANGE_TAG));
@@ -87,7 +87,7 @@ public function save(Request $request, Response $response): Response
 
         $this->saveSuccessMessage($alert);
 
-        $redirect = true === $isDelete ? '/admin/tags' : '/?searchtags='. urlencode($toTag);
+        $redirect = true === $isDelete ? '/admin/tags' : '/?searchtags=' . urlencode($toTag);
 
         return $this->redirect($response, $redirect);
     }
diff --git a/application/front/controller/admin/PasswordController.php b/application/front/controller/admin/PasswordController.php
index 5ec0d24b..4aaf1f82 100644
--- a/application/front/controller/admin/PasswordController.php
+++ b/application/front/controller/admin/PasswordController.php
@@ -25,7 +25,7 @@ public function __construct(ShaarliContainer $container)
 
         $this->assignView(
             'pagetitle',
-            t('Change password') .' - '. $this->container->conf->get('general.title', 'Shaarli')
+            t('Change password') . ' - ' . $this->container->conf->get('general.title', 'Shaarli')
         );
     }
 
@@ -78,7 +78,7 @@ public function change(Request $request, Response $response): Response
 
         // Save new password
         // Salt renders rainbow-tables attacks useless.
-        $this->container->conf->set('credentials.salt', sha1(uniqid('', true) .'_'. mt_rand()));
+        $this->container->conf->set('credentials.salt', sha1(uniqid('', true) . '_' . mt_rand()));
         $this->container->conf->set(
             'credentials.hash',
             sha1(
diff --git a/application/front/controller/admin/PluginsController.php b/application/front/controller/admin/PluginsController.php
index 8e059681..ae47c1af 100644
--- a/application/front/controller/admin/PluginsController.php
+++ b/application/front/controller/admin/PluginsController.php
@@ -42,7 +42,7 @@ function ($a, $b) {
         $this->assignView('disabledPlugins', $disabledPlugins);
         $this->assignView(
             'pagetitle',
-            t('Plugin Administration') .' - '. $this->container->conf->get('general.title', 'Shaarli')
+            t('Plugin Administration') . ' - ' . $this->container->conf->get('general.title', 'Shaarli')
         );
 
         return $response->write($this->render(TemplatePage::PLUGINS_ADMIN));
@@ -64,7 +64,7 @@ public function save(Request $request, Response $response): Response
                 unset($parameters['parameters_form']);
                 unset($parameters['token']);
                 foreach ($parameters as $param => $value) {
-                    $this->container->conf->set('plugins.'. $param, escape($value));
+                    $this->container->conf->set('plugins.' . $param, escape($value));
                 }
             } else {
                 $this->container->conf->set('general.enabled_plugins', save_plugin_config($parameters));
diff --git a/application/front/controller/admin/ServerController.php b/application/front/controller/admin/ServerController.php
index bfc99422..80997940 100644
--- a/application/front/controller/admin/ServerController.php
+++ b/application/front/controller/admin/ServerController.php
@@ -65,7 +65,7 @@ public function clearCache(Request $request, Response $response): Response
 
             $this->saveWarningMessage(
                 t('Thumbnails cache has been cleared.') . ' ' .
-                '<a href="'. $this->container->basePath .'/admin/thumbnails">' . t('Please synchronize them.') .'</a>'
+                '<a href="' . $this->container->basePath . '/admin/thumbnails">' . t('Please synchronize them.') . '</a>'
             );
         } else {
             $folders = [
diff --git a/application/front/controller/admin/SessionFilterController.php b/application/front/controller/admin/SessionFilterController.php
index d9a7a2e0..0917b6d2 100644
--- a/application/front/controller/admin/SessionFilterController.php
+++ b/application/front/controller/admin/SessionFilterController.php
@@ -45,6 +45,4 @@ public function visibility(Request $request, Response $response, array $args): R
 
         return $this->redirectFromReferer($request, $response, ['visibility']);
     }
-
-
 }
diff --git a/application/front/controller/admin/ShaareAddController.php b/application/front/controller/admin/ShaareAddController.php
index 8dc386b2..ab8e7f40 100644
--- a/application/front/controller/admin/ShaareAddController.php
+++ b/application/front/controller/admin/ShaareAddController.php
@@ -23,7 +23,7 @@ public function addShaare(Request $request, Response $response): Response
 
         $this->assignView(
             'pagetitle',
-            t('Shaare a new link') .' - '. $this->container->conf->get('general.title', 'Shaarli')
+            t('Shaare a new link') . ' - ' . $this->container->conf->get('general.title', 'Shaarli')
         );
         $this->assignView('tags', $tags);
         $this->assignView('default_private_links', $this->container->conf->get('privacy.default_private_links', false));
diff --git a/application/front/controller/admin/ShaareManageController.php b/application/front/controller/admin/ShaareManageController.php
index 0b143172..35837baa 100644
--- a/application/front/controller/admin/ShaareManageController.php
+++ b/application/front/controller/admin/ShaareManageController.php
@@ -54,7 +54,7 @@ public function deleteBookmark(Request $request, Response $response): Response
             $data = $formatter->format($bookmark);
             $this->executePageHooks('delete_link', $data);
             $this->container->bookmarkService->remove($bookmark, false);
-            ++ $count;
+            ++$count;
         }
 
         if ($count > 0) {
diff --git a/application/front/controller/admin/ShaarePublishController.php b/application/front/controller/admin/ShaarePublishController.php
index 625a5680..4cbfcdc5 100644
--- a/application/front/controller/admin/ShaarePublishController.php
+++ b/application/front/controller/admin/ShaarePublishController.php
@@ -118,7 +118,8 @@ public function save(Request $request, Response $response): Response
             $this->container->conf->get('general.tags_separator', ' ')
         );
 
-        if ($this->container->conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
+        if (
+            $this->container->conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
             && true !== $this->container->conf->get('general.enable_async_metadata', true)
             && $bookmark->shouldUpdateThumbnail()
         ) {
@@ -148,7 +149,8 @@ public function save(Request $request, Response $response): Response
         return $this->redirectFromReferer(
             $request,
             $response,
-            ['/admin/add-shaare', '/admin/shaare'], ['addlink', 'post', 'edit_link'],
+            ['/admin/add-shaare', '/admin/shaare'],
+            ['addlink', 'post', 'edit_link'],
             $bookmark->getShortUrl()
         );
     }
@@ -168,10 +170,10 @@ protected function displayForm(array $link, bool $isNew, Request $request, Respo
             $this->assignView($key, $value);
         }
 
-        $editLabel = false === $isNew ? t('Edit') .' ' : '';
+        $editLabel = false === $isNew ? t('Edit') . ' ' : '';
         $this->assignView(
             'pagetitle',
-            $editLabel . t('Shaare') .' - '. $this->container->conf->get('general.title', 'Shaarli')
+            $editLabel . t('Shaare') . ' - ' . $this->container->conf->get('general.title', 'Shaarli')
         );
 
         return $response->write($this->render(TemplatePage::EDIT_LINK));
@@ -194,7 +196,8 @@ protected function buildLinkDataFromUrl(Request $request, string $url): array
 
             // If this is an HTTP(S) link, we try go get the page to extract
             // the title (otherwise we will to straight to the edit form.)
-            if (true !== $this->container->conf->get('general.enable_async_metadata', true)
+            if (
+                true !== $this->container->conf->get('general.enable_async_metadata', true)
                 && empty($title)
                 && strpos(get_url_scheme($url) ?: '', 'http') !== false
             ) {
diff --git a/application/front/controller/admin/ThumbnailsController.php b/application/front/controller/admin/ThumbnailsController.php
index 4dc09d38..94d97d4b 100644
--- a/application/front/controller/admin/ThumbnailsController.php
+++ b/application/front/controller/admin/ThumbnailsController.php
@@ -34,7 +34,7 @@ public function index(Request $request, Response $response): Response
         $this->assignView('ids', $ids);
         $this->assignView(
             'pagetitle',
-            t('Thumbnails update') .' - '. $this->container->conf->get('general.title', 'Shaarli')
+            t('Thumbnails update') . ' - ' . $this->container->conf->get('general.title', 'Shaarli')
         );
 
         return $response->write($this->render(TemplatePage::THUMBNAILS));
diff --git a/application/front/controller/admin/ToolsController.php b/application/front/controller/admin/ToolsController.php
index a87f20d2..560e5e3e 100644
--- a/application/front/controller/admin/ToolsController.php
+++ b/application/front/controller/admin/ToolsController.php
@@ -28,7 +28,7 @@ public function index(Request $request, Response $response): Response
             $this->assignView($key, $value);
         }
 
-        $this->assignView('pagetitle', t('Tools') .' - '. $this->container->conf->get('general.title', 'Shaarli'));
+        $this->assignView('pagetitle', t('Tools') . ' - ' . $this->container->conf->get('general.title', 'Shaarli'));
 
         return $response->write($this->render(TemplatePage::TOOLS));
     }
diff --git a/application/front/controller/visitor/BookmarkListController.php b/application/front/controller/visitor/BookmarkListController.php
index cc3837ce..fe8231be 100644
--- a/application/front/controller/visitor/BookmarkListController.php
+++ b/application/front/controller/visitor/BookmarkListController.php
@@ -35,7 +35,8 @@ public function index(Request $request, Response $response): Response
         $formatter->addContextData('base_path', $this->container->basePath);
 
         $searchTags = normalize_spaces($request->getParam('searchtags') ?? '');
-        $searchTerm = escape(normalize_spaces($request->getParam('searchterm') ?? ''));;
+        $searchTerm = escape(normalize_spaces($request->getParam('searchterm') ?? ''));
+        ;
 
         // Filter bookmarks according search parameters.
         $visibility = $this->container->sessionManager->getSessionParameter('visibility');
@@ -160,7 +161,7 @@ public function permalink(Request $request, Response $response, array $args): Re
         $data = array_merge(
             $this->initializeTemplateVars(),
             [
-                'pagetitle' => $bookmark->getTitle() .' - '. $this->container->conf->get('general.title', 'Shaarli'),
+                'pagetitle' => $bookmark->getTitle() . ' - ' . $this->container->conf->get('general.title', 'Shaarli'),
                 'links' => [$formatter->format($bookmark)],
             ]
         );
@@ -185,7 +186,8 @@ protected function updateThumbnail(Bookmark $bookmark, bool $writeDatastore = tr
             $bookmark->setThumbnail(null);
 
             // Requires an update, not async retrieval, thumbnails enabled
-            if ($bookmark->shouldUpdateThumbnail()
+            if (
+                $bookmark->shouldUpdateThumbnail()
                 && true !== $this->container->conf->get('general.enable_async_metadata', true)
                 && $this->container->conf->get('thumbnails.mode', Thumbnailer::MODE_NONE) !== Thumbnailer::MODE_NONE
             ) {
diff --git a/application/front/controller/visitor/DailyController.php b/application/front/controller/visitor/DailyController.php
index 728bc2d8..846cfe22 100644
--- a/application/front/controller/visitor/DailyController.php
+++ b/application/front/controller/visitor/DailyController.php
@@ -132,7 +132,7 @@ public function rss(Request $request, Response $response): Response
                 'date' => $endDateTime,
                 'date_rss' => $endDateTime->format(DateTime::RSS),
                 'date_human' => DailyPageHelper::getDescriptionByType($type, $dayDateTime),
-                'absolute_url' => $indexUrl . 'daily?'. $type .'=' . $day,
+                'absolute_url' => $indexUrl . 'daily?' . $type . '=' . $day,
                 'links' => [],
             ];
 
diff --git a/application/front/controller/visitor/FeedController.php b/application/front/controller/visitor/FeedController.php
index 8d8b546a..edc7ef43 100644
--- a/application/front/controller/visitor/FeedController.php
+++ b/application/front/controller/visitor/FeedController.php
@@ -27,7 +27,7 @@ public function rss(Request $request, Response $response): Response
 
     protected function processRequest(string $feedType, Request $request, Response $response): Response
     {
-        $response = $response->withHeader('Content-Type', 'application/'. $feedType .'+xml; charset=utf-8');
+        $response = $response->withHeader('Content-Type', 'application/' . $feedType . '+xml; charset=utf-8');
 
         $pageUrl = page_url($this->container->environment);
         $cache = $this->container->pageCacheManager->getCachePage($pageUrl);
diff --git a/application/front/controller/visitor/InstallController.php b/application/front/controller/visitor/InstallController.php
index 22329294..bf965929 100644
--- a/application/front/controller/visitor/InstallController.php
+++ b/application/front/controller/visitor/InstallController.php
@@ -39,7 +39,8 @@ public function index(Request $request, Response $response): Response
         // Before installation, we'll make sure that permissions are set properly, and sessions are working.
         $this->checkPermissions();
 
-        if (static::SESSION_TEST_VALUE
+        if (
+            static::SESSION_TEST_VALUE
             !== $this->container->sessionManager->getSessionParameter(static::SESSION_TEST_KEY)
         ) {
             $this->container->sessionManager->setSessionParameter(static::SESSION_TEST_KEY, static::SESSION_TEST_VALUE);
@@ -75,17 +76,18 @@ public function sessionTest(Request $request, Response $response): Response
         // This part makes sure sessions works correctly.
         // (Because on some hosts, session.save_path may not be set correctly,
         // or we may not have write access to it.)
-        if (static::SESSION_TEST_VALUE
+        if (
+            static::SESSION_TEST_VALUE
             !== $this->container->sessionManager->getSessionParameter(static::SESSION_TEST_KEY)
         ) {
             // Step 2: Check if data in session is correct.
             $msg = t(
-                '<pre>Sessions do not seem to work correctly on your server.<br>'.
-                'Make sure the variable "session.save_path" is set correctly in your PHP config, '.
-                'and that you have write access to it.<br>'.
-                'It currently points to %s.<br>'.
-                'On some browsers, accessing your server via a hostname like \'localhost\' '.
-                'or any custom hostname without a dot causes cookie storage to fail. '.
+                '<pre>Sessions do not seem to work correctly on your server.<br>' .
+                'Make sure the variable "session.save_path" is set correctly in your PHP config, ' .
+                'and that you have write access to it.<br>' .
+                'It currently points to %s.<br>' .
+                'On some browsers, accessing your server via a hostname like \'localhost\' ' .
+                'or any custom hostname without a dot causes cookie storage to fail. ' .
                 'We recommend accessing your server via it\'s IP address or Fully Qualified Domain Name.<br>'
             );
             $msg = sprintf($msg, $this->container->sessionManager->getSavePath());
@@ -104,7 +106,8 @@ public function sessionTest(Request $request, Response $response): Response
     public function save(Request $request, Response $response): Response
     {
         $timezone = 'UTC';
-        if (!empty($request->getParam('continent'))
+        if (
+            !empty($request->getParam('continent'))
             && !empty($request->getParam('city'))
             && isTimeZoneValid($request->getParam('continent'), $request->getParam('city'))
         ) {
@@ -114,7 +117,7 @@ public function save(Request $request, Response $response): Response
 
         $login = $request->getParam('setlogin');
         $this->container->conf->set('credentials.login', $login);
-        $salt = sha1(uniqid('', true) .'_'. mt_rand());
+        $salt = sha1(uniqid('', true) . '_' . mt_rand());
         $this->container->conf->set('credentials.salt', $salt);
         $this->container->conf->set('credentials.hash', sha1($request->getParam('setpassword') . $login . $salt));
 
@@ -123,7 +126,7 @@ public function save(Request $request, Response $response): Response
         } else {
             $this->container->conf->set(
                 'general.title',
-                'Shared bookmarks on '.escape(index_url($this->container->environment))
+                'Shared bookmarks on ' . escape(index_url($this->container->environment))
             );
         }
 
diff --git a/application/front/controller/visitor/LoginController.php b/application/front/controller/visitor/LoginController.php
index f5038fe3..4b881535 100644
--- a/application/front/controller/visitor/LoginController.php
+++ b/application/front/controller/visitor/LoginController.php
@@ -43,7 +43,7 @@ public function index(Request $request, Response $response): Response
         $this
             ->assignView('returnurl', escape($returnUrl))
             ->assignView('remember_user_default', $this->container->conf->get('privacy.remember_user_default', true))
-            ->assignView('pagetitle', t('Login') .' - '. $this->container->conf->get('general.title', 'Shaarli'))
+            ->assignView('pagetitle', t('Login') . ' - ' . $this->container->conf->get('general.title', 'Shaarli'))
         ;
 
         return $response->write($this->render(TemplatePage::LOGIN));
@@ -64,7 +64,8 @@ public function login(Request $request, Response $response): Response
             return $this->redirect($response, '/');
         }
 
-        if (!$this->container->loginManager->checkCredentials(
+        if (
+            !$this->container->loginManager->checkCredentials(
                 client_ip_id($this->container->environment),
                 $request->getParam('login'),
                 $request->getParam('password')
@@ -101,7 +102,8 @@ public function login(Request $request, Response $response): Response
      */
     protected function checkLoginState(): bool
     {
-        if ($this->container->loginManager->isLoggedIn()
+        if (
+            $this->container->loginManager->isLoggedIn()
             || $this->container->conf->get('security.open_shaarli', false)
         ) {
             throw new CantLoginException();
diff --git a/application/front/controller/visitor/PictureWallController.php b/application/front/controller/visitor/PictureWallController.php
index 3c57f8dd..23553ee6 100644
--- a/application/front/controller/visitor/PictureWallController.php
+++ b/application/front/controller/visitor/PictureWallController.php
@@ -26,7 +26,7 @@ public function index(Request $request, Response $response): Response
 
         $this->assignView(
             'pagetitle',
-            t('Picture wall') .' - '. $this->container->conf->get('general.title', 'Shaarli')
+            t('Picture wall') . ' - ' . $this->container->conf->get('general.title', 'Shaarli')
         );
 
         // Optionally filter the results:
diff --git a/application/front/controller/visitor/ShaarliVisitorController.php b/application/front/controller/visitor/ShaarliVisitorController.php
index 54f9fe03..ae946c59 100644
--- a/application/front/controller/visitor/ShaarliVisitorController.php
+++ b/application/front/controller/visitor/ShaarliVisitorController.php
@@ -144,7 +144,8 @@ protected function redirectFromReferer(
         if (null !== $referer) {
             $currentUrl = parse_url($referer);
             // If the referer is not related to Shaarli instance, redirect to default
-            if (isset($currentUrl['host'])
+            if (
+                isset($currentUrl['host'])
                 && strpos(index_url($this->container->environment), $currentUrl['host']) === false
             ) {
                 return $response->withRedirect($defaultPath);
@@ -173,7 +174,7 @@ protected function redirectFromReferer(
             }
         }
 
-        $queryString = count($params) > 0 ? '?'. http_build_query($params) : '';
+        $queryString = count($params) > 0 ? '?' . http_build_query($params) : '';
         $anchor = $anchor ? '#' . $anchor : '';
 
         return $response->withRedirect($path . $queryString . $anchor);
diff --git a/application/front/controller/visitor/TagCloudController.php b/application/front/controller/visitor/TagCloudController.php
index 560cad08..46d62779 100644
--- a/application/front/controller/visitor/TagCloudController.php
+++ b/application/front/controller/visitor/TagCloudController.php
@@ -84,10 +84,10 @@ protected function processRequest(string $type, Request $request, Response $resp
         $this->executePageHooks('render_tag' . $type, $data, 'tag.' . $type);
         $this->assignAllView($data);
 
-        $searchTags = !empty($searchTags) ? trim(str_replace($tagsSeparator, ' ', $searchTags)) .' - ' : '';
+        $searchTags = !empty($searchTags) ? trim(str_replace($tagsSeparator, ' ', $searchTags)) . ' - ' : '';
         $this->assignView(
             'pagetitle',
-            $searchTags . t('Tag '. $type) .' - '. $this->container->conf->get('general.title', 'Shaarli')
+            $searchTags . t('Tag ' . $type) . ' - ' . $this->container->conf->get('general.title', 'Shaarli')
         );
 
         return $response->write($this->render('tag.' . $type));
diff --git a/application/front/controller/visitor/TagController.php b/application/front/controller/visitor/TagController.php
index 7a3377a7..3aa58542 100644
--- a/application/front/controller/visitor/TagController.php
+++ b/application/front/controller/visitor/TagController.php
@@ -27,7 +27,7 @@ public function addTag(Request $request, Response $response, array $args): Respo
         // In case browser does not send HTTP_REFERER, we search a single tag
         if (null === $referer) {
             if (null !== $newTag) {
-                return $this->redirect($response, '/?searchtags='. urlencode($newTag));
+                return $this->redirect($response, '/?searchtags=' . urlencode($newTag));
             }
 
             return $this->redirect($response, '/');
@@ -37,7 +37,7 @@ public function addTag(Request $request, Response $response, array $args): Respo
         parse_str($currentUrl['query'] ?? '', $params);
 
         if (null === $newTag) {
-            return $response->withRedirect(($currentUrl['path'] ?? './') .'?'. http_build_query($params));
+            return $response->withRedirect(($currentUrl['path'] ?? './') . '?' . http_build_query($params));
         }
 
         // Prevent redirection loop
@@ -68,7 +68,7 @@ public function addTag(Request $request, Response $response, array $args): Respo
         // We also remove page (keeping the same page has no sense, since the results are different)
         unset($params['page']);
 
-        return $response->withRedirect(($currentUrl['path'] ?? './') .'?'. http_build_query($params));
+        return $response->withRedirect(($currentUrl['path'] ?? './') . '?' . http_build_query($params));
     }
 
     /**
@@ -90,7 +90,7 @@ public function removeTag(Request $request, Response $response, array $args): Re
         parse_str($currentUrl['query'] ?? '', $params);
 
         if (null === $tagToRemove) {
-            return $response->withRedirect(($currentUrl['path'] ?? './') .'?'. http_build_query($params));
+            return $response->withRedirect(($currentUrl['path'] ?? './') . '?' . http_build_query($params));
         }
 
         // Prevent redirection loop
diff --git a/application/helper/ApplicationUtils.php b/application/helper/ApplicationUtils.php
index 4b34e114..212dd8e2 100644
--- a/application/helper/ApplicationUtils.php
+++ b/application/helper/ApplicationUtils.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Helper;
 
 use Exception;
@@ -16,7 +17,7 @@ class ApplicationUtils
 
     public static $GITHUB_URL = 'https://github.com/shaarli/Shaarli';
     public static $GIT_RAW_URL = 'https://raw.githubusercontent.com/shaarli/Shaarli';
-    public static $GIT_BRANCHES = array('latest', 'stable');
+    public static $GIT_BRANCHES = ['latest', 'stable'];
     private static $VERSION_START_TAG = '<?php /* ';
     private static $VERSION_END_TAG = ' */ ?>';
 
@@ -64,8 +65,8 @@ public static function getVersion($remote, $timeout = 2)
         }
 
         return str_replace(
-            array(self::$VERSION_START_TAG, self::$VERSION_END_TAG, PHP_EOL),
-            array('', '', ''),
+            [self::$VERSION_START_TAG, self::$VERSION_END_TAG, PHP_EOL],
+            ['', '', ''],
             $data
         );
     }
@@ -184,13 +185,15 @@ public static function checkResourcePermissions(ConfigManager $conf, bool $minim
         $rainTplDir = rtrim($conf->get('resource.raintpl_tpl'), '/');
 
         // Check script and template directories are readable
-        foreach ([
-                     'application',
-                     'inc',
-                     'plugins',
-                     $rainTplDir,
-                     $rainTplDir . '/' . $conf->get('resource.theme'),
-                 ] as $path) {
+        foreach (
+            [
+            'application',
+            'inc',
+            'plugins',
+            $rainTplDir,
+            $rainTplDir . '/' . $conf->get('resource.theme'),
+            ] as $path
+        ) {
             if (!is_readable(realpath($path))) {
                 $errors[] = '"' . $path . '" ' . t('directory is not readable');
             }
@@ -203,10 +206,10 @@ public static function checkResourcePermissions(ConfigManager $conf, bool $minim
             ];
         } else {
             $folders = [
-                $conf->get('resource.thumbnails_cache'),
-                $conf->get('resource.data_dir'),
-                $conf->get('resource.page_cache'),
-                $conf->get('resource.raintpl_tmp'),
+            $conf->get('resource.thumbnails_cache'),
+            $conf->get('resource.data_dir'),
+            $conf->get('resource.page_cache'),
+            $conf->get('resource.raintpl_tmp'),
             ];
         }
 
@@ -224,13 +227,15 @@ public static function checkResourcePermissions(ConfigManager $conf, bool $minim
         }
 
         // Check configuration files are readable and writable
-        foreach (array(
-                     $conf->getConfigFileExt(),
-                     $conf->get('resource.datastore'),
-                     $conf->get('resource.ban_file'),
-                     $conf->get('resource.log'),
-                     $conf->get('resource.update_check'),
-                 ) as $path) {
+        foreach (
+            [
+                 $conf->getConfigFileExt(),
+                 $conf->get('resource.datastore'),
+                 $conf->get('resource.ban_file'),
+                 $conf->get('resource.log'),
+                 $conf->get('resource.update_check'),
+             ] as $path
+        ) {
             if (!is_file(realpath($path))) {
                 # the file may not exist yet
                 continue;
diff --git a/application/helper/FileUtils.php b/application/helper/FileUtils.php
index 2eac0793..e8a2168c 100644
--- a/application/helper/FileUtils.php
+++ b/application/helper/FileUtils.php
@@ -105,7 +105,7 @@ public static function clearFolder(string $path, bool $selfDelete, array $exclud
         }
 
         foreach (new \DirectoryIterator($path) as $file) {
-            if($file->isDot()) {
+            if ($file->isDot()) {
                 continue;
             }
 
@@ -116,7 +116,7 @@ public static function clearFolder(string $path, bool $selfDelete, array $exclud
 
             if ($file->isFile()) {
                 unlink($file->getPathname());
-            } elseif($file->isDir()) {
+            } elseif ($file->isDir()) {
                 $skipped = static::clearFolder($file->getRealPath(), true, $exclude) || $skipped;
             }
         }
diff --git a/application/http/HttpUtils.php b/application/http/HttpUtils.php
index ed1002b0..4bde1d5b 100644
--- a/application/http/HttpUtils.php
+++ b/application/http/HttpUtils.php
@@ -48,7 +48,7 @@ function get_http_response(
     $cleanUrl = $urlObj->idnToAscii();
 
     if (!filter_var($cleanUrl, FILTER_VALIDATE_URL) || !$urlObj->isHttp()) {
-        return array(array(0 => 'Invalid HTTP UrlUtils'), false);
+        return [[0 => 'Invalid HTTP UrlUtils'], false];
     }
 
     $userAgent =
@@ -71,7 +71,7 @@ function get_http_response(
 
     $ch = curl_init($cleanUrl);
     if ($ch === false) {
-        return array(array(0 => 'curl_init() error'), false);
+        return [[0 => 'curl_init() error'], false];
     }
 
     // General cURL settings
@@ -82,7 +82,7 @@ function get_http_response(
     curl_setopt(
         $ch,
         CURLOPT_HTTPHEADER,
-        array('Accept-Language: ' . $acceptLanguage)
+        ['Accept-Language: ' . $acceptLanguage]
     );
     curl_setopt($ch, CURLOPT_MAXREDIRS, $maxRedirs);
     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
@@ -90,7 +90,7 @@ function get_http_response(
     curl_setopt($ch, CURLOPT_USERAGENT, $userAgent);
 
     // Max download size management
-    curl_setopt($ch, CURLOPT_BUFFERSIZE, 1024*16);
+    curl_setopt($ch, CURLOPT_BUFFERSIZE, 1024 * 16);
     curl_setopt($ch, CURLOPT_NOPROGRESS, false);
     if (is_callable($curlHeaderFunction)) {
         curl_setopt($ch, CURLOPT_HEADERFUNCTION, $curlHeaderFunction);
@@ -122,9 +122,9 @@ function ($arg0, $arg1, $arg2, $arg3, $arg4) use ($maxBytes) {
              * Removing this would require updating
              * GetHttpUrlTest::testGetInvalidRemoteUrl()
              */
-            return array(false, false);
+            return [false, false];
         }
-        return array(array(0 => 'curl_exec() error: ' . $errorStr), false);
+        return [[0 => 'curl_exec() error: ' . $errorStr], false];
     }
 
     // Formatting output like the fallback method
@@ -135,7 +135,7 @@ function ($arg0, $arg1, $arg2, $arg3, $arg4) use ($maxBytes) {
     $rawHeadersLastRedir = end($rawHeadersArrayRedirs);
 
     $content = substr($response, $headSize);
-    $headers = array();
+    $headers = [];
     foreach (preg_split('~[\r\n]+~', $rawHeadersLastRedir) as $line) {
         if (empty($line) || ctype_space($line)) {
             continue;
@@ -146,7 +146,7 @@ function ($arg0, $arg1, $arg2, $arg3, $arg4) use ($maxBytes) {
             $value = $splitLine[1];
             if (array_key_exists($key, $headers)) {
                 if (!is_array($headers[$key])) {
-                    $headers[$key] = array(0 => $headers[$key]);
+                    $headers[$key] = [0 => $headers[$key]];
                 }
                 $headers[$key][] = $value;
             } else {
@@ -157,7 +157,7 @@ function ($arg0, $arg1, $arg2, $arg3, $arg4) use ($maxBytes) {
         }
     }
 
-    return array($headers, $content);
+    return [$headers, $content];
 }
 
 /**
@@ -188,15 +188,15 @@ function get_http_response_fallback(
     $acceptLanguage,
     $maxRedr
 ) {
-    $options = array(
-        'http' => array(
+    $options = [
+        'http' => [
             'method' => 'GET',
             'timeout' => $timeout,
             'user_agent' => $userAgent,
             'header' => "Accept: */*\r\n"
                 . 'Accept-Language: ' . $acceptLanguage
-        )
-    );
+        ]
+    ];
 
     stream_context_set_default($options);
     list($headers, $finalUrl) = get_redirected_headers($cleanUrl, $maxRedr);
@@ -207,7 +207,7 @@ function get_http_response_fallback(
     }
 
     if (! $headers) {
-        return array($headers, false);
+        return [$headers, false];
     }
 
     try {
@@ -215,10 +215,10 @@ function get_http_response_fallback(
         $context = stream_context_create($options);
         $content = file_get_contents($finalUrl, false, $context, -1, $maxBytes);
     } catch (Exception $exc) {
-        return array(array(0 => 'HTTP Error'), $exc->getMessage());
+        return [[0 => 'HTTP Error'], $exc->getMessage()];
     }
 
-    return array($headers, $content);
+    return [$headers, $content];
 }
 
 /**
@@ -237,10 +237,12 @@ function get_redirected_headers($url, $redirectionLimit = 3)
     }
 
     // Headers found, redirection found, and limit not reached.
-    if ($redirectionLimit-- > 0
+    if (
+        $redirectionLimit-- > 0
         && !empty($headers)
         && (strpos($headers[0], '301') !== false || strpos($headers[0], '302') !== false)
-        && !empty($headers['Location'])) {
+        && !empty($headers['Location'])
+    ) {
         $redirection = is_array($headers['Location']) ? end($headers['Location']) : $headers['Location'];
         if ($redirection != $url) {
             $redirection = getAbsoluteUrl($url, $redirection);
@@ -248,7 +250,7 @@ function get_redirected_headers($url, $redirectionLimit = 3)
         }
     }
 
-    return array($headers, $url);
+    return [$headers, $url];
 }
 
 /**
@@ -270,7 +272,7 @@ function getAbsoluteUrl($originalUrl, $newUrl)
     }
 
     $parts = parse_url($originalUrl);
-    $final = $parts['scheme'] .'://'. $parts['host'];
+    $final = $parts['scheme'] . '://' . $parts['host'];
     $final .= (!empty($parts['port'])) ? $parts['port'] : '';
     $final .= '/';
     if ($newUrl[0] != '/') {
@@ -323,7 +325,8 @@ function server_url($server)
                 $scheme = 'https';
             }
 
-            if (($scheme == 'http' && $port != '80')
+            if (
+                ($scheme == 'http' && $port != '80')
                 || ($scheme == 'https' && $port != '443')
             ) {
                 $port = ':' . $port;
@@ -344,22 +347,26 @@ function server_url($server)
             $host = $server['SERVER_NAME'];
         }
 
-        return $scheme.'://'.$host.$port;
+        return $scheme . '://' . $host . $port;
     }
 
     // SSL detection
-    if ((! empty($server['HTTPS']) && strtolower($server['HTTPS']) == 'on')
-        || (isset($server['SERVER_PORT']) && $server['SERVER_PORT'] == '443')) {
+    if (
+        (! empty($server['HTTPS']) && strtolower($server['HTTPS']) == 'on')
+        || (isset($server['SERVER_PORT']) && $server['SERVER_PORT'] == '443')
+    ) {
         $scheme = 'https';
     }
 
     // Do not append standard port values
-    if (($scheme == 'http' && $server['SERVER_PORT'] != '80')
-        || ($scheme == 'https' && $server['SERVER_PORT'] != '443')) {
-        $port = ':'.$server['SERVER_PORT'];
+    if (
+        ($scheme == 'http' && $server['SERVER_PORT'] != '80')
+        || ($scheme == 'https' && $server['SERVER_PORT'] != '443')
+    ) {
+        $port = ':' . $server['SERVER_PORT'];
     }
 
-    return $scheme.'://'.$server['SERVER_NAME'].$port;
+    return $scheme . '://' . $server['SERVER_NAME'] . $port;
 }
 
 /**
@@ -567,7 +574,10 @@ function get_curl_download_callback(
      *
      * @return int|bool length of $data or false if we need to stop the download
      */
-    return function ($ch, $data) use (
+    return function (
+        $ch,
+        $data
+    ) use (
         $retrieveDescription,
         $tagsSeparator,
         &$charset,
@@ -601,7 +611,7 @@ function get_curl_download_callback(
                 $foundChunk = $currentChunk;
                 // Keywords use the format tag1, tag2 multiple words, tag
                 // So we split the result with `,`, then if a tag contains the separator we replace it by `-`.
-                $keywords = tags_array2str(array_map(function(string $keyword) use ($tagsSeparator): string {
+                $keywords = tags_array2str(array_map(function (string $keyword) use ($tagsSeparator): string {
                     return tags_array2str(tags_str2array($keyword, $tagsSeparator), '-');
                 }, tags_str2array($keywords, ',')), $tagsSeparator);
             }
@@ -611,7 +621,8 @@ function get_curl_download_callback(
         // If we already found either the title, description or keywords,
         // it's highly unlikely that we'll found the other metas further than
         // in the same chunk of data or the next one. So we also stop the download after that.
-        if ((!empty($responseCode) && !empty($contentType) && !empty($charset)) && $foundChunk !== null
+        if (
+            (!empty($responseCode) && !empty($contentType) && !empty($charset)) && $foundChunk !== null
             && (! $retrieveDescription
                 || $foundChunk < $currentChunk
                 || (!empty($title) && !empty($description) && !empty($keywords))
diff --git a/application/http/Url.php b/application/http/Url.php
index 90444a2f..fe87088f 100644
--- a/application/http/Url.php
+++ b/application/http/Url.php
@@ -17,7 +17,7 @@
  */
 class Url
 {
-    private static $annoyingQueryParams = array(
+    private static $annoyingQueryParams = [
         // Facebook
         'action_object_map=',
         'action_ref_map=',
@@ -37,15 +37,15 @@ class Url
 
         // Other
         'campaign_'
-    );
+    ];
 
-    private static $annoyingFragments = array(
+    private static $annoyingFragments = [
         // ATInternet
         'xtor=RSS-',
 
         // Misc.
         'tk.rss_all'
-    );
+    ];
 
     /*
      * URL parts represented as an array
@@ -120,7 +120,7 @@ protected function cleanupQuery()
         foreach (self::$annoyingQueryParams as $annoying) {
             foreach ($queryParams as $param) {
                 if (startsWith($param, $annoying)) {
-                    $queryParams = array_diff($queryParams, array($param));
+                    $queryParams = array_diff($queryParams, [$param]);
                     continue;
                 }
             }
diff --git a/application/http/UrlUtils.php b/application/http/UrlUtils.php
index e8d1a283..de5b7db1 100644
--- a/application/http/UrlUtils.php
+++ b/application/http/UrlUtils.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Converts an array-represented URL to a string
  *
@@ -12,15 +13,15 @@
  */
 function unparse_url($parsedUrl)
 {
-    $scheme   = isset($parsedUrl['scheme']) ? $parsedUrl['scheme'].'://' : '';
+    $scheme   = isset($parsedUrl['scheme']) ? $parsedUrl['scheme'] . '://' : '';
     $host     = isset($parsedUrl['host']) ? $parsedUrl['host'] : '';
-    $port     = isset($parsedUrl['port']) ? ':'.$parsedUrl['port'] : '';
+    $port     = isset($parsedUrl['port']) ? ':' . $parsedUrl['port'] : '';
     $user     = isset($parsedUrl['user']) ? $parsedUrl['user'] : '';
-    $pass     = isset($parsedUrl['pass']) ? ':'.$parsedUrl['pass']  : '';
+    $pass     = isset($parsedUrl['pass']) ? ':' . $parsedUrl['pass']  : '';
     $pass     = ($user || $pass) ? "$pass@" : '';
     $path     = isset($parsedUrl['path']) ? $parsedUrl['path'] : '';
-    $query    = isset($parsedUrl['query']) ? '?'.$parsedUrl['query'] : '';
-    $fragment = isset($parsedUrl['fragment']) ? '#'.$parsedUrl['fragment'] : '';
+    $query    = isset($parsedUrl['query']) ? '?' . $parsedUrl['query'] : '';
+    $fragment = isset($parsedUrl['fragment']) ? '#' . $parsedUrl['fragment'] : '';
 
     return "$scheme$user$pass$host$port$path$query$fragment";
 }
diff --git a/application/legacy/LegacyController.php b/application/legacy/LegacyController.php
index 826604e7..1fed418b 100644
--- a/application/legacy/LegacyController.php
+++ b/application/legacy/LegacyController.php
@@ -51,7 +51,7 @@ public function post(Request $request, Response $response): Response
 
         if (!$this->container->loginManager->isLoggedIn()) {
             $parameters = $buildParameters($request->getQueryParams(), true);
-            return $this->redirect($response, '/login?returnurl='. $this->getBasePath() . $route . $parameters);
+            return $this->redirect($response, '/login?returnurl=' . $this->getBasePath() . $route . $parameters);
         }
 
         $parameters = $buildParameters($request->getQueryParams(), false);
diff --git a/application/legacy/LegacyLinkDB.php b/application/legacy/LegacyLinkDB.php
index 5c02a21b..442b833c 100644
--- a/application/legacy/LegacyLinkDB.php
+++ b/application/legacy/LegacyLinkDB.php
@@ -240,8 +240,8 @@ private function check()
         }
 
         // Create a dummy database for example
-        $this->links = array();
-        $link = array(
+        $this->links = [];
+        $link = [
             'id' => 1,
             'title' => t('The personal, minimalist, super-fast, database free, bookmarking service'),
             'url' => 'https://shaarli.readthedocs.io',
@@ -257,11 +257,11 @@ private function check()
             'created' => new DateTime(),
             'tags' => 'opensource software',
             'sticky' => false,
-        );
+        ];
         $link['shorturl'] = link_small_hash($link['created'], $link['id']);
         $this->links[1] = $link;
 
-        $link = array(
+        $link = [
             'id' => 0,
             'title' => t('My secret stuff... - Pastebin.com'),
             'url' => 'http://sebsauvage.net/paste/?8434b27936c09649#bR7XsXhoTiLcqCpQbmOpBi3rq2zzQUC5hBI7ZT1O3x8=',
@@ -270,7 +270,7 @@ private function check()
             'created' => new DateTime('1 minute ago'),
             'tags' => 'secretstuff',
             'sticky' => false,
-        );
+        ];
         $link['shorturl'] = link_small_hash($link['created'], $link['id']);
         $this->links[0] = $link;
 
@@ -285,7 +285,7 @@ private function read()
     {
         // Public bookmarks are hidden and user not logged in => nothing to show
         if ($this->hidePublicLinks && !$this->loggedIn) {
-            $this->links = array();
+            $this->links = [];
             return;
         }
 
@@ -293,7 +293,7 @@ private function read()
         $this->ids = [];
         $this->links = FileUtils::readFlatDB($this->datastore, []);
 
-        $toremove = array();
+        $toremove = [];
         foreach ($this->links as $key => &$link) {
             if (!$this->loggedIn && $link['private'] != 0) {
                 // Transition for not upgraded databases.
@@ -414,7 +414,7 @@ public function filterDay($request)
      * @return array filtered bookmarks, all bookmarks if no suitable filter was provided.
      */
     public function filterSearch(
-        $filterRequest = array(),
+        $filterRequest = [],
         $casesensitive = false,
         $visibility = 'all',
         $untaggedonly = false
@@ -512,7 +512,7 @@ public function renameTag($from, $to)
      */
     public function days()
     {
-        $linkDays = array();
+        $linkDays = [];
         foreach ($this->links as $link) {
             $linkDays[$link['created']->format('Ymd')] = 0;
         }
diff --git a/application/legacy/LegacyLinkFilter.php b/application/legacy/LegacyLinkFilter.php
index 7cf93d60..e6d186c4 100644
--- a/application/legacy/LegacyLinkFilter.php
+++ b/application/legacy/LegacyLinkFilter.php
@@ -120,7 +120,7 @@ private function noFilter($visibility = 'all')
             return $this->links;
         }
 
-        $out = array();
+        $out = [];
         foreach ($this->links as $key => $value) {
             if ($value['private'] && $visibility === 'private') {
                 $out[$key] = $value;
@@ -143,7 +143,7 @@ private function noFilter($visibility = 'all')
      */
     private function filterSmallHash($smallHash)
     {
-        $filtered = array();
+        $filtered = [];
         foreach ($this->links as $key => $l) {
             if ($smallHash == $l['shorturl']) {
                 // Yes, this is ugly and slow
@@ -186,7 +186,7 @@ private function filterFulltext($searchterms, $visibility = 'all')
             return $this->noFilter($visibility);
         }
 
-        $filtered = array();
+        $filtered = [];
         $search = mb_convert_case(html_entity_decode($searchterms), MB_CASE_LOWER, 'UTF-8');
         $exactRegex = '/"([^"]+)"/';
         // Retrieve exact search terms.
@@ -198,8 +198,8 @@ private function filterFulltext($searchterms, $visibility = 'all')
         $explodedSearchAnd = array_values(array_filter($explodedSearchAnd));
 
         // Filter excluding terms and update andSearch.
-        $excludeSearch = array();
-        $andSearch = array();
+        $excludeSearch = [];
+        $andSearch = [];
         foreach ($explodedSearchAnd as $needle) {
             if ($needle[0] == '-' && strlen($needle) > 1) {
                 $excludeSearch[] = substr($needle, 1);
@@ -208,7 +208,7 @@ private function filterFulltext($searchterms, $visibility = 'all')
             }
         }
 
-        $keys = array('title', 'description', 'url', 'tags');
+        $keys = ['title', 'description', 'url', 'tags'];
 
         // Iterate over every stored link.
         foreach ($this->links as $id => $link) {
@@ -336,7 +336,7 @@ public function filterTags($tags, $casesensitive = false, $visibility = 'all')
         }
 
         // create resulting array
-        $filtered = array();
+        $filtered = [];
 
         // iterate over each link
         foreach ($this->links as $key => $link) {
@@ -352,7 +352,7 @@ public function filterTags($tags, $casesensitive = false, $visibility = 'all')
             $search = $link['tags']; // build search string, start with tags of current link
             if (strlen(trim($link['description'])) && strpos($link['description'], '#') !== false) {
                 // description given and at least one possible tag found
-                $descTags = array();
+                $descTags = [];
                 // find all tags in the form of #tag in the description
                 preg_match_all(
                     '/(?<![' . self::$HASHTAG_CHARS . '])#([' . self::$HASHTAG_CHARS . ']+?)\b/sm',
@@ -419,7 +419,7 @@ public function filterDay($day)
             throw new Exception('Invalid date format');
         }
 
-        $filtered = array();
+        $filtered = [];
         foreach ($this->links as $key => $l) {
             if ($l['created']->format('Ymd') == $day) {
                 $filtered[$key] = $l;
diff --git a/application/legacy/LegacyUpdater.php b/application/legacy/LegacyUpdater.php
index ed949b1e..9bda54b8 100644
--- a/application/legacy/LegacyUpdater.php
+++ b/application/legacy/LegacyUpdater.php
@@ -93,7 +93,7 @@ public function __construct($doneUpdates, $linkDB, $conf, $isLoggedIn, &$session
      */
     public function update()
     {
-        $updatesRan = array();
+        $updatesRan = [];
 
         // If the user isn't logged in, exit without updating.
         if ($this->isLoggedIn !== true) {
@@ -106,7 +106,8 @@ public function update()
 
         foreach ($this->methods as $method) {
             // Not an update method or already done, pass.
-            if (!startsWith($method->getName(), 'updateMethod')
+            if (
+                !startsWith($method->getName(), 'updateMethod')
                 || in_array($method->getName(), $this->doneUpdates)
             ) {
                 continue;
@@ -189,7 +190,7 @@ public function updateMethodConfigToJson()
         }
 
         // Set sub config keys (config and plugins)
-        $subConfig = array('config', 'plugins');
+        $subConfig = ['config', 'plugins'];
         foreach ($subConfig as $sub) {
             foreach ($oldConfig[$sub] as $key => $value) {
                 if (isset($legacyMap[$sub . '.' . $key])) {
@@ -259,7 +260,7 @@ public function updateMethodDatastoreIds()
         $save = $this->conf->get('resource.data_dir') . '/datastore.' . date('YmdHis') . '.php';
         copy($this->conf->get('resource.datastore'), $save);
 
-        $links = array();
+        $links = [];
         foreach ($this->linkDB as $offset => $value) {
             $links[] = $value;
             unset($this->linkDB[$offset]);
@@ -498,7 +499,8 @@ public function updateMethodVisibilitySession()
      */
     public function updateMethodDownloadSizeAndTimeoutConf()
     {
-        if ($this->conf->exists('general.download_max_size')
+        if (
+            $this->conf->exists('general.download_max_size')
             && $this->conf->exists('general.download_timeout')
         ) {
             return true;
diff --git a/application/netscape/NetscapeBookmarkUtils.php b/application/netscape/NetscapeBookmarkUtils.php
index 6ca728b7..2d97b4c8 100644
--- a/application/netscape/NetscapeBookmarkUtils.php
+++ b/application/netscape/NetscapeBookmarkUtils.php
@@ -59,11 +59,11 @@ public function filterAndFormat(
         $indexUrl
     ) {
         // see tpl/export.html for possible values
-        if (!in_array($selection, array('all', 'public', 'private'))) {
+        if (!in_array($selection, ['all', 'public', 'private'])) {
             throw new Exception(t('Invalid export selection:') . ' "' . $selection . '"');
         }
 
-        $bookmarkLinks = array();
+        $bookmarkLinks = [];
         foreach ($this->bookmarkService->search([], $selection) as $bookmark) {
             $link = $formatter->format($bookmark);
             $link['taglist'] = implode(',', $bookmark->getTags());
diff --git a/application/plugin/PluginManager.php b/application/plugin/PluginManager.php
index da66dea3..3ea55728 100644
--- a/application/plugin/PluginManager.php
+++ b/application/plugin/PluginManager.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Plugin;
 
 use Shaarli\Config\ConfigManager;
@@ -23,7 +24,7 @@ class PluginManager
      *
      * @var array $loadedPlugins
      */
-    private $loadedPlugins = array();
+    private $loadedPlugins = [];
 
     /**
      * @var ConfigManager Configuration Manager instance.
@@ -57,7 +58,7 @@ class PluginManager
     public function __construct(&$conf)
     {
         $this->conf = $conf;
-        $this->errors = array();
+        $this->errors = [];
     }
 
     /**
@@ -98,7 +99,7 @@ public function load($authorizedPlugins)
      *
      * @return void
      */
-    public function executeHooks($hook, &$data, $params = array())
+    public function executeHooks($hook, &$data, $params = [])
     {
         $metadataParameters = [
             'target' => '_PAGE_',
@@ -196,7 +197,7 @@ public function buildHookName($hook, $pluginName)
      */
     public function getPluginsMeta()
     {
-        $metaData = array();
+        $metaData = [];
         $dirs = glob(self::$PLUGINS_PATH . '/*', GLOB_ONLYDIR | GLOB_MARK);
 
         // Browse all plugin directories.
@@ -217,9 +218,9 @@ public function getPluginsMeta()
             if (isset($metaData[$plugin]['parameters'])) {
                 $params = explode(';', $metaData[$plugin]['parameters']);
             } else {
-                $params = array();
+                $params = [];
             }
-            $metaData[$plugin]['parameters'] = array();
+            $metaData[$plugin]['parameters'] = [];
             foreach ($params as $param) {
                 if (empty($param)) {
                     continue;
diff --git a/application/plugin/exception/PluginFileNotFoundException.php b/application/plugin/exception/PluginFileNotFoundException.php
index e5386f02..21ac6604 100644
--- a/application/plugin/exception/PluginFileNotFoundException.php
+++ b/application/plugin/exception/PluginFileNotFoundException.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Plugin\Exception;
 
 use Exception;
diff --git a/application/render/ThemeUtils.php b/application/render/ThemeUtils.php
index 86096c64..18471f0a 100644
--- a/application/render/ThemeUtils.php
+++ b/application/render/ThemeUtils.php
@@ -23,10 +23,10 @@ class ThemeUtils
     public static function getThemes($tplDir)
     {
         $tplDir = rtrim($tplDir, '/');
-        $allTheme = glob($tplDir.'/*', GLOB_ONLYDIR);
+        $allTheme = glob($tplDir . '/*', GLOB_ONLYDIR);
         $themes = [];
         foreach ($allTheme as $value) {
-            $themes[] = str_replace($tplDir.'/', '', $value);
+            $themes[] = str_replace($tplDir . '/', '', $value);
         }
 
         return $themes;
diff --git a/application/security/BanManager.php b/application/security/BanManager.php
index 288cbde0..7077af5b 100644
--- a/application/security/BanManager.php
+++ b/application/security/BanManager.php
@@ -1,6 +1,5 @@
 <?php
 
-
 namespace Shaarli\Security;
 
 use Psr\Log\LoggerInterface;
@@ -47,7 +46,8 @@ class BanManager
      * @param string          $banFile        Path to the file containing IP bans and failures
      * @param LoggerInterface $logger         PSR-3 logger to save login attempts in log directory
      */
-    public function __construct($trustedProxies, $nbAttempts, $banDuration, $banFile, LoggerInterface $logger) {
+    public function __construct($trustedProxies, $nbAttempts, $banDuration, $banFile, LoggerInterface $logger)
+    {
         $this->trustedProxies = $trustedProxies;
         $this->nbAttempts = $nbAttempts;
         $this->banDuration = $banDuration;
@@ -80,7 +80,7 @@ public function handleFailedAttempt($server)
 
         if ($this->failures[$ip] >= $this->nbAttempts) {
             $this->bans[$ip] = time() + $this->banDuration;
-            $this->logger->info(format_log('IP address banned from login: '. $ip, $ip));
+            $this->logger->info(format_log('IP address banned from login: ' . $ip, $ip));
         }
         $this->writeBanFile();
     }
@@ -136,7 +136,7 @@ public function isBanned($server)
             unset($this->failures[$ip]);
         }
         unset($this->bans[$ip]);
-        $this->logger->info(format_log('Ban lifted for: '. $ip, $ip));
+        $this->logger->info(format_log('Ban lifted for: ' . $ip, $ip));
 
         $this->writeBanFile();
         return false;
diff --git a/application/security/LoginManager.php b/application/security/LoginManager.php
index 426e785e..b795b80e 100644
--- a/application/security/LoginManager.php
+++ b/application/security/LoginManager.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Security;
 
 use Exception;
@@ -106,7 +107,8 @@ public function checkLoginState($clientIpId)
             // The user client has a valid stay-signed-in cookie
             // Session information is updated with the current client information
             $this->sessionManager->storeLoginInfo($clientIpId);
-        } elseif ($this->sessionManager->hasSessionExpired()
+        } elseif (
+            $this->sessionManager->hasSessionExpired()
             || $this->sessionManager->hasClientIpChanged($clientIpId)
         ) {
             $this->sessionManager->logout();
@@ -145,7 +147,8 @@ public function checkCredentials($clientIpId, $login, $password)
         // Check credentials
         try {
             $useLdapLogin = !empty($this->configManager->get('ldap.host'));
-            if ($login === $this->configManager->get('credentials.login')
+            if (
+                $login === $this->configManager->get('credentials.login')
                 && (
                     (false === $useLdapLogin && $this->checkCredentialsFromLocalConfig($login, $password))
                     || (true === $useLdapLogin && $this->checkCredentialsFromLdap($login, $password))
@@ -156,7 +159,7 @@ public function checkCredentials($clientIpId, $login, $password)
 
                 return true;
             }
-        } catch(Exception $exception) {
+        } catch (Exception $exception) {
             $this->logger->info(format_log('Exception while checking credentials: ' . $exception, $clientIpId));
         }
 
@@ -174,7 +177,8 @@ public function checkCredentials($clientIpId, $login, $password)
      *
      * @return bool true if the provided credentials are valid, false otherwise
      */
-    public function checkCredentialsFromLocalConfig($login, $password) {
+    public function checkCredentialsFromLocalConfig($login, $password)
+    {
         $hash = sha1($password . $login . $this->configManager->get('credentials.salt'));
 
         return $login == $this->configManager->get('credentials.login')
@@ -193,14 +197,14 @@ public function checkCredentialsFromLocalConfig($login, $password) {
      */
     public function checkCredentialsFromLdap($login, $password, $connect = null, $bind = null)
     {
-        $connect = $connect ?? function($host) {
+        $connect = $connect ?? function ($host) {
             $resource = ldap_connect($host);
 
             ldap_set_option($resource, LDAP_OPT_PROTOCOL_VERSION, 3);
 
             return $resource;
         };
-        $bind = $bind ?? function($handle, $dn, $password) {
+        $bind = $bind ?? function ($handle, $dn, $password) {
             return ldap_bind($handle, $dn, $password);
         };
 
diff --git a/application/security/SessionManager.php b/application/security/SessionManager.php
index 96bf193c..f957b91a 100644
--- a/application/security/SessionManager.php
+++ b/application/security/SessionManager.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Security;
 
 use Shaarli\Config\ConfigManager;
@@ -79,7 +80,7 @@ public function setStaySignedIn($staySignedIn)
      */
     public function generateToken()
     {
-        $token = sha1(uniqid('', true) .'_'. mt_rand() . $this->conf->get('credentials.salt'));
+        $token = sha1(uniqid('', true) . '_' . mt_rand() . $this->conf->get('credentials.salt'));
         $this->session['tokens'][$token] = 1;
         return $token;
     }
diff --git a/application/updater/Updater.php b/application/updater/Updater.php
index 88a7bc7b..3451cf36 100644
--- a/application/updater/Updater.php
+++ b/application/updater/Updater.php
@@ -88,7 +88,8 @@ public function update(string $basePath = null)
 
         foreach ($this->methods as $method) {
             // Not an update method or already done, pass.
-            if (! startsWith($method->getName(), 'updateMethod')
+            if (
+                ! startsWith($method->getName(), 'updateMethod')
                 || in_array($method->getName(), $this->doneUpdates)
             ) {
                 continue;
@@ -152,7 +153,8 @@ public function updateMethodMigrateExistingNotesUrl(): bool
         $updated = false;
 
         foreach ($this->bookmarkService->search() as $bookmark) {
-            if ($bookmark->isNote()
+            if (
+                $bookmark->isNote()
                 && startsWith($bookmark->getUrl(), '?')
                 && 1 === preg_match('/^\?([a-zA-Z0-9-_@]{6})($|&|#)/', $bookmark->getUrl(), $match)
             ) {
diff --git a/application/updater/UpdaterUtils.php b/application/updater/UpdaterUtils.php
index 828a49fc..908bdc39 100644
--- a/application/updater/UpdaterUtils.php
+++ b/application/updater/UpdaterUtils.php
@@ -19,7 +19,7 @@ public static function read_updates_file($updatesFilepath)
                 return explode(';', $content);
             }
         }
-        return array();
+        return [];
     }
 
     /**
@@ -38,7 +38,7 @@ public static function write_updates_file($updatesFilepath, $updates)
 
         $res = file_put_contents($updatesFilepath, implode(';', $updates));
         if ($res === false) {
-            throw new \Exception('Unable to write updates in '. $updatesFilepath . '.');
+            throw new \Exception('Unable to write updates in ' . $updatesFilepath . '.');
         }
     }
 }
diff --git a/index.php b/index.php
index 8fe86236..1eb7659a 100644
--- a/index.php
+++ b/index.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Shaarli - The personal, minimalist, super-fast, database free, bookmarking service.
  *
@@ -77,9 +78,9 @@
 new Languages(setlocale(LC_MESSAGES, 0), $conf);
 
 $conf->setEmpty('general.timezone', date_default_timezone_get());
-$conf->setEmpty('general.title', t('Shared bookmarks on '). escape(index_url($_SERVER)));
+$conf->setEmpty('general.title', t('Shared bookmarks on ') . escape(index_url($_SERVER)));
 
-RainTPL::$tpl_dir = $conf->get('resource.raintpl_tpl').'/'.$conf->get('resource.theme').'/'; // template directory
+RainTPL::$tpl_dir = $conf->get('resource.raintpl_tpl') . '/' . $conf->get('resource.theme') . '/'; // template directory
 RainTPL::$cache_dir = $conf->get('resource.raintpl_tmp'); // cache directory
 
 date_default_timezone_set($conf->get('general.timezone', 'UTC'));
@@ -177,6 +178,6 @@
 } catch (Throwable $e) {
     die(nl2br(
         'An unexpected error happened, and the error template could not be displayed.' . PHP_EOL . PHP_EOL .
-       exception2text($e)
+        exception2text($e)
     ));
 }
diff --git a/plugins/addlink_toolbar/addlink_toolbar.php b/plugins/addlink_toolbar/addlink_toolbar.php
index ab6ed6de..80b1dd95 100644
--- a/plugins/addlink_toolbar/addlink_toolbar.php
+++ b/plugins/addlink_toolbar/addlink_toolbar.php
@@ -17,26 +17,26 @@
 function hook_addlink_toolbar_render_header($data)
 {
     if ($data['_PAGE_'] == TemplatePage::LINKLIST && $data['_LOGGEDIN_'] === true) {
-        $form = array(
-            'attr' => array(
+        $form = [
+            'attr' => [
                 'method' => 'GET',
                 'action' => $data['_BASE_PATH_'] . '/admin/shaare',
                 'name'   => 'addform',
                 'class'  => 'addform',
-            ),
-            'inputs' => array(
-                array(
+            ],
+            'inputs' => [
+                [
                     'type' => 'text',
                     'name' => 'post',
                     'placeholder' => t('URI'),
-                ),
-                array(
+                ],
+                [
                     'type' => 'submit',
                     'value' => t('Add link'),
                     'class' => 'bigbutton',
-                ),
-            ),
-        );
+                ],
+            ],
+        ];
         $data['fields_toolbar'][] = $form;
     }
 
diff --git a/plugins/archiveorg/archiveorg.php b/plugins/archiveorg/archiveorg.php
index ed271532..88f2b653 100644
--- a/plugins/archiveorg/archiveorg.php
+++ b/plugins/archiveorg/archiveorg.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Plugin Archive.org.
  *
diff --git a/plugins/default_colors/default_colors.php b/plugins/default_colors/default_colors.php
index e1fd5cfb..574a0bd4 100644
--- a/plugins/default_colors/default_colors.php
+++ b/plugins/default_colors/default_colors.php
@@ -28,14 +28,14 @@ function default_colors_init($conf)
 {
     $params = [];
     foreach (DEFAULT_COLORS_PLACEHOLDERS as $placeholder) {
-        $value = trim($conf->get('plugins.'. $placeholder, ''));
+        $value = trim($conf->get('plugins.' . $placeholder, ''));
         if (strlen($value) > 0) {
             $params[$placeholder] = $value;
         }
     }
 
     if (empty($params)) {
-        $error = t('Default colors plugin error: '.
+        $error = t('Default colors plugin error: ' .
             'This plugin is active and no custom color is configured.');
         return [$error];
     }
@@ -56,7 +56,7 @@ function default_colors_init($conf)
 function hook_default_colors_render_includes($data)
 {
     $file = PluginManager::$PLUGINS_PATH . '/default_colors/default_colors.css';
-    if (file_exists($file )) {
+    if (file_exists($file)) {
         $data['css_files'][] = $file ;
     }
 
@@ -75,7 +75,7 @@ function default_colors_generate_css_file($params): void
     $content = '';
     foreach (DEFAULT_COLORS_PLACEHOLDERS as $rule) {
         $content .= !empty($params[$rule])
-            ? default_colors_format_css_rule($params, $rule) .';'. PHP_EOL
+            ? default_colors_format_css_rule($params, $rule) . ';' . PHP_EOL
             : '';
     }
 
@@ -99,8 +99,8 @@ function default_colors_format_css_rule($data, $parameter)
     }
 
     $key = str_replace('DEFAULT_COLORS_', '', $parameter);
-    $key = str_replace('_', '-', strtolower($key)) .'-color';
-    return '  --'. $key .': '. $data[$parameter];
+    $key = str_replace('_', '-', strtolower($key)) . '-color';
+    return '  --' . $key . ': ' . $data[$parameter];
 }
 
 
diff --git a/plugins/demo_plugin/demo_plugin.php b/plugins/demo_plugin/demo_plugin.php
index defb01f7..22d27b68 100644
--- a/plugins/demo_plugin/demo_plugin.php
+++ b/plugins/demo_plugin/demo_plugin.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Demo Plugin.
  *
@@ -82,14 +83,14 @@ function hook_demo_plugin_render_header($data)
              * A link is an array of its attributes (key="value"),
              * and a mandatory `html` key, which contains its value.
              */
-            $button = array(
-                'attr' => array (
+            $button = [
+                'attr' =>  [
                     'href' => '#',
                     'class' => 'mybutton',
                     'title' => 'hover me',
-                ),
+                ],
                 'html' => 'DEMO buttons toolbar',
-            );
+            ];
             $data['buttons_toolbar'][] = $button;
         }
 
@@ -115,29 +116,29 @@ function hook_demo_plugin_render_header($data)
          *   <input input-2-attribute-1="input 2 attribute 1 value">
          * </form>
          */
-        $form = array(
-            'attr' => array(
+        $form = [
+            'attr' => [
                 'method' => 'GET',
                 'action' => $data['_BASE_PATH_'] . '/',
                 'class' => 'addform',
-            ),
-            'inputs' => array(
-                array(
+            ],
+            'inputs' => [
+                [
                     'type' => 'text',
                     'name' => 'demo',
                     'placeholder' => 'demo',
-                )
-            )
-        );
+                ]
+            ]
+        ];
         $data['fields_toolbar'][] = $form;
     }
     // Another button always displayed
-    $button = array(
-        'attr' => array(
+    $button = [
+        'attr' => [
             'href' => '#',
-        ),
+        ],
         'html' => 'Demo',
-    );
+    ];
     $data['buttons_toolbar'][] = $button;
 
     return $data;
@@ -187,7 +188,7 @@ function hook_demo_plugin_render_includes($data)
 function hook_demo_plugin_render_footer($data)
 {
     // Footer text
-    $data['text'][] = '<br>'. demo_plugin_t('Shaarli is now enhanced by the awesome demo_plugin.');
+    $data['text'][] = '<br>' . demo_plugin_t('Shaarli is now enhanced by the awesome demo_plugin.');
 
     // Free elements at the end of the page.
     $data['endofpage'][] = '<marquee id="demo_marquee">' .
@@ -229,13 +230,13 @@ function hook_demo_plugin_render_linklist($data)
      * and a mandatory `html` key, which contains its value.
      * It's also recommended to add key 'on' or 'off' for theme rendering.
      */
-    $action = array(
-        'attr' => array(
+    $action = [
+        'attr' => [
             'href' => '?up',
             'title' => 'Uppercase!',
-        ),
+        ],
         'html' => '←',
-    );
+    ];
 
     if (isset($_GET['up'])) {
         // Manipulate link data
@@ -275,7 +276,7 @@ function hook_demo_plugin_render_linklist($data)
 function hook_demo_plugin_render_editlink($data)
 {
     // Load HTML into a string
-    $html = file_get_contents(PluginManager::$PLUGINS_PATH .'/demo_plugin/field.html');
+    $html = file_get_contents(PluginManager::$PLUGINS_PATH . '/demo_plugin/field.html');
 
     // Replace value in HTML if it exists in $data
     if (!empty($data['link']['stuff'])) {
diff --git a/plugins/isso/isso.php b/plugins/isso/isso.php
index d4632163..a5450989 100644
--- a/plugins/isso/isso.php
+++ b/plugins/isso/isso.php
@@ -19,9 +19,9 @@ function isso_init($conf)
 {
     $issoUrl = $conf->get('plugins.ISSO_SERVER');
     if (empty($issoUrl)) {
-        $error = t('Isso plugin error: '.
+        $error = t('Isso plugin error: ' .
             'Please define the "ISSO_SERVER" setting in the plugin administration page.');
-        return array($error);
+        return [$error];
     }
 }
 
@@ -49,12 +49,12 @@ function hook_isso_render_linklist($data, $conf)
         $isso = sprintf($issoHtml, $issoUrl, $issoUrl, $link['id'], $link['id']);
         $data['plugin_end_zone'][] = $isso;
     } else {
-        $button = '<span><a href="'. ($data['_BASE_PATH_'] ?? '') . '/shaare/%s#isso-thread">';
+        $button = '<span><a href="' . ($data['_BASE_PATH_'] ?? '') . '/shaare/%s#isso-thread">';
         // For the default theme we use a FontAwesome icon which is better than an image
         if ($conf->get('resource.theme') === 'default') {
             $button .= '<i class="linklist-plugin-icon fa fa-comment"></i>';
         } else {
-            $button .= '<img class="linklist-plugin-icon" src="'. $data['_ROOT_PATH_'].'/plugins/isso/comment.png" ';
+            $button .= '<img class="linklist-plugin-icon" src="' . $data['_ROOT_PATH_'] . '/plugins/isso/comment.png" ';
             $button .= 'title="Comment on this shaare" alt="Comments" />';
         }
         $button .= '</a></span>';
diff --git a/plugins/piwik/piwik.php b/plugins/piwik/piwik.php
index 17b1aecc..efea8610 100644
--- a/plugins/piwik/piwik.php
+++ b/plugins/piwik/piwik.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Piwik plugin.
  * Adds tracking code on each page.
@@ -22,7 +23,7 @@ function piwik_init($conf)
     if (empty($piwikUrl) || empty($piwikSiteid)) {
         $error = t('Piwik plugin error: ' .
             'Please define PIWIK_URL and PIWIK_SITEID in the plugin administration page.');
-        return array($error);
+        return [$error];
     }
 }
 
diff --git a/plugins/playvideos/playvideos.php b/plugins/playvideos/playvideos.php
index 91a9c1e5..4f874f92 100644
--- a/plugins/playvideos/playvideos.php
+++ b/plugins/playvideos/playvideos.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Plugin PlayVideos
  *
@@ -19,14 +20,14 @@
 function hook_playvideos_render_header($data)
 {
     if ($data['_PAGE_'] == TemplatePage::LINKLIST) {
-        $playvideo = array(
-            'attr' => array(
+        $playvideo = [
+            'attr' => [
                 'href' => '#',
                 'title' => t('Video player'),
                 'id' => 'playvideos',
-            ),
-            'html' => '► '. t('Play Videos')
-        );
+            ],
+            'html' => '► ' . t('Play Videos')
+        ];
         $data['buttons_toolbar'][] = $playvideo;
     }
 
diff --git a/plugins/pubsubhubbub/pubsubhubbub.php b/plugins/pubsubhubbub/pubsubhubbub.php
index 8fe6799c..299b84fb 100644
--- a/plugins/pubsubhubbub/pubsubhubbub.php
+++ b/plugins/pubsubhubbub/pubsubhubbub.php
@@ -42,7 +42,7 @@ function pubsubhubbub_init($conf)
 function hook_pubsubhubbub_render_feed($data, $conf)
 {
     $feedType = $data['_PAGE_'] == TemplatePage::FEED_RSS ? FeedBuilder::$FEED_RSS : FeedBuilder::$FEED_ATOM;
-    $template = file_get_contents(PluginManager::$PLUGINS_PATH . '/pubsubhubbub/hub.'. $feedType .'.xml');
+    $template = file_get_contents(PluginManager::$PLUGINS_PATH . '/pubsubhubbub/hub.' . $feedType . '.xml');
     $data['feed_plugins_header'][] = sprintf($template, $conf->get('plugins.PUBSUBHUB_URL'));
 
     return $data;
@@ -59,10 +59,10 @@ function hook_pubsubhubbub_render_feed($data, $conf)
  */
 function hook_pubsubhubbub_save_link($data, $conf)
 {
-    $feeds = array(
-        index_url($_SERVER) .'feed/atom',
-        index_url($_SERVER) .'feed/rss',
-    );
+    $feeds = [
+        index_url($_SERVER) . 'feed/atom',
+        index_url($_SERVER) . 'feed/rss',
+    ];
 
     $httpPost = function_exists('curl_version') ? false : 'nocurl_http_post';
     try {
@@ -87,11 +87,11 @@ function hook_pubsubhubbub_save_link($data, $conf)
  */
 function nocurl_http_post($url, $postString)
 {
-    $params = array('http' => array(
+    $params = ['http' => [
         'method' => 'POST',
         'content' => $postString,
         'user_agent' => 'PubSubHubbub-Publisher-PHP/1.0',
-    ));
+    ]];
 
     $context = stream_context_create($params);
     $fp = @fopen($url, 'rb', false, $context);
diff --git a/plugins/qrcode/qrcode.php b/plugins/qrcode/qrcode.php
index 24fd18ba..2ae10476 100644
--- a/plugins/qrcode/qrcode.php
+++ b/plugins/qrcode/qrcode.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Plugin qrcode
  * Add QRCode containing URL for each links.
diff --git a/plugins/wallabag/WallabagInstance.php b/plugins/wallabag/WallabagInstance.php
index f4a0a92b..88f84ae3 100644
--- a/plugins/wallabag/WallabagInstance.php
+++ b/plugins/wallabag/WallabagInstance.php
@@ -1,4 +1,5 @@
 <?php
+
 namespace Shaarli\Plugin\Wallabag;
 
 /**
@@ -11,20 +12,20 @@ class WallabagInstance
      *          - key: version ID, must match plugin settings.
      *          - value: version name.
      */
-    private static $wallabagVersions = array(
+    private static $wallabagVersions = [
         1 => '1.x',
         2 => '2.x',
-    );
+    ];
 
     /**
      * @var array Static reference to WB endpoint according to the API version.
      *          - key: version name.
      *          - value: endpoint.
      */
-    private static $wallabagEndpoints = array(
+    private static $wallabagEndpoints = [
         '1.x' => '?plainurl=',
         '2.x' => 'bookmarklet?url=',
-    );
+    ];
 
     /**
      * @var string Wallabag user instance URL.
diff --git a/plugins/wallabag/wallabag.php b/plugins/wallabag/wallabag.php
index 8cd3f4ad..f2003cb9 100644
--- a/plugins/wallabag/wallabag.php
+++ b/plugins/wallabag/wallabag.php
@@ -1,4 +1,5 @@
 <?php
+
 /**
  * Wallabag plugin
  */
@@ -18,9 +19,9 @@ function wallabag_init($conf)
 {
     $wallabagUrl = $conf->get('plugins.WALLABAG_URL');
     if (empty($wallabagUrl)) {
-        $error = t('Wallabag plugin error: '.
+        $error = t('Wallabag plugin error: ' .
             'Please define the "WALLABAG_URL" setting in the plugin administration page.');
-        return array($error);
+        return [$error];
     }
     $conf->setEmpty('plugins.WALLABAG_URL', '2');
 }