PSR: use elseif instead of else if

See https://www.php-fig.org/psr/psr-2/\#51-if-elseif-else

application/FileUtils.php

@@ -37,7 +37,7 @@ public static function writeFlatDB($file, $content)
         if (is_file($file) && !is_writeable($file)) {
             // The datastore exists but is not writeable
             throw new IOException($file);
-        } else if (!is_file($file) && !is_writeable(dirname($file))) {
+        } elseif (!is_file($file) && !is_writeable(dirname($file))) {
             // The datastore does not exist and its parent directory is not writeable
             throw new IOException(dirname($file));
         }

application/LinkFilter.php

@@ -117,7 +117,7 @@ private function noFilter($visibility = 'all')
         foreach ($this->links as $key => $value) {
             if ($value['private'] && $visibility === 'private') {
                 $out[$key] = $value;
-            } else if (! $value['private'] && $visibility === 'public') {
+            } elseif (! $value['private'] && $visibility === 'public') {
                 $out[$key] = $value;
             }
         }
@@ -210,7 +210,7 @@ private function filterFulltext($searchterms, $visibility = 'all')
             if ($visibility !== 'all') {
                 if (! $link['private'] && $visibility === 'private') {
                     continue;
-                } else if ($link['private'] && $visibility === 'public') {
+                } elseif ($link['private'] && $visibility === 'public') {
                     continue;
                 }
             }
@@ -337,7 +337,7 @@ public function filterTags($tags, $casesensitive = false, $visibility = 'all')
             if ($visibility !== 'all') {
                 if (! $link['private'] && $visibility === 'private') {
                     continue;
-                } else if ($link['private'] && $visibility === 'public') {
+                } elseif ($link['private'] && $visibility === 'public') {
                     continue;
                 }
             }
@@ -380,7 +380,7 @@ public function filterUntagged($visibility)
             if ($visibility !== 'all') {
                 if (! $link['private'] && $visibility === 'private') {
                     continue;
-                } else if ($link['private'] && $visibility === 'public') {
+                } elseif ($link['private'] && $visibility === 'public') {
                     continue;
                 }
             }

application/NetscapeBookmarkUtils.php

@@ -154,10 +154,10 @@ public static function import($post, $files, $linkDb, $conf, $history)
             if (empty($post['privacy']) || $post['privacy'] == 'default') {
                 // use value from the imported file
                 $private = $bkm['pub'] == '1' ? 0 : 1;
-            } else if ($post['privacy'] == 'private') {
+            } elseif ($post['privacy'] == 'private') {
                 // all imported links are private
                 $private = 1;
-            } else if ($post['privacy'] == 'public') {
+            } elseif ($post['privacy'] == 'public') {
                 // all imported links are public
                 $private = 0;
             }

application/Url.php

@@ -81,7 +81,7 @@ function whitelist_protocols($url, $protocols)
     // Protocol not allowed: we remove it and replace it with http
     if ($protocol === 1 && ! in_array($match[1], $protocols)) {
         $url = str_replace($match[0], 'http://', $url);
-    } else if ($protocol !== 1) {
+    } elseif ($protocol !== 1) {
         $url = 'http://' . $url;
     }
     return $url;

application/api/controllers/History.php

@@ -36,7 +36,7 @@ public function getHistory($request, $response)
         if (empty($offset)) {
             $offset = 0;
         }
-        else if (ctype_digit($offset)) {
+        elseif (ctype_digit($offset)) {
             $offset = (int) $offset;
         } else {
             throw new ApiBadParametersException('Invalid offset');
@@ -46,7 +46,7 @@ public function getHistory($request, $response)
         $limit = $request->getParam('limit');
         if (empty($limit)) {
             $limit = count($history);
-        } else if (ctype_digit($limit)) {
+        } elseif (ctype_digit($limit)) {
             $limit = (int) $limit;
         } else {
             throw new ApiBadParametersException('Invalid limit');

application/api/controllers/Links.php

@@ -59,9 +59,9 @@ public function getLinks($request, $response)
         $limit = $request->getParam('limit');
         if (empty($limit)) {
             $limit = self::$DEFAULT_LIMIT;
-        } else if (ctype_digit($limit)) {
+        } elseif (ctype_digit($limit)) {
             $limit = intval($limit);
-        } else if ($limit === 'all') {
+        } elseif ($limit === 'all') {
             $limit = count($links);
         } else {
             throw new ApiBadParametersException('Invalid limit');

index.php

@@ -887,7 +887,7 @@ function renderPage($conf, $pluginManager, $LINKSDB, $history, $sessionManager,
         if (empty($params['searchtags'])) {
             $params['searchtags'] = trim($_GET['addtag']);
         }
-        else if ($addtag) {
+        elseif ($addtag) {
             $params['searchtags'] = trim($params['searchtags']).' '.trim($_GET['addtag']);
         }
 
@@ -953,7 +953,7 @@ function renderPage($conf, $pluginManager, $LINKSDB, $history, $sessionManager,
             } else {
                 unset($_SESSION['visibility']);
             }
-        } else if ($_GET['visibility'] === 'public') {
+        } elseif ($_GET['visibility'] === 'public') {
             if (empty($_SESSION['visibility']) || $_SESSION['visibility'] !== 'public') {
                 // See only public links
                 $_SESSION['visibility'] = 'public';

tests/plugins/test/test.php

@@ -11,7 +11,7 @@ function hook_test_random($data)
 {
     if (isset($data['_PAGE_']) && $data['_PAGE_'] == 'test') {
         $data[1] = 'page test';
-    } else if (isset($data['_LOGGEDIN_']) && $data['_LOGGEDIN_'] === true) {
+    } elseif (isset($data['_LOGGEDIN_']) && $data['_LOGGEDIN_'] === true) {
         $data[1] = 'loggedin';
     } else {
         $data[1] = $data[0];