146 lines
5.3 KiB
PHP
146 lines
5.3 KiB
PHP
<?php
|
||
/*
|
||
MINIGAL NANO
|
||
- A PHP/HTML/CSS based image gallery script
|
||
|
||
This script and included files are subject to licensing from Creative Commons (http://creativecommons.org/licenses/by-sa/2.5/)
|
||
You may use, edit and redistribute this script, as long as you pay tribute to the original author by NOT removing the linkback to www.minigal.dk ("Powered by MiniGal Nano x.x.x")
|
||
|
||
MiniGal Nano is created by Thomas Rybak
|
||
|
||
Copyright 2010 by Thomas Rybak
|
||
Support: www.minigal.dk
|
||
Community: www.minigal.dk/forum
|
||
|
||
Please enjoy this free script!
|
||
|
||
Version 0.3.5 modified by Sebastien SAUVAGE (sebsauvage.net):
|
||
- Added thumbnail cache (reduces server CPU load, server bandwith and speeds up client page display).
|
||
- Thumbnails are now always in JPEG even if the source image is PNG or GIF.
|
||
|
||
USAGE EXAMPLE:
|
||
File: createthumb.php
|
||
Example: <img src="createthumb.php?filename=photo.jpg&width=100&height=100">
|
||
*/
|
||
// error_reporting(E_ALL);
|
||
error_reporting(0);
|
||
/*
|
||
if (preg_match("/.jpg$|.jpeg$/i", $_GET['filename'])) header('Content-type: image/jpeg');
|
||
if (preg_match("/.gif$/i", $_GET['filename'])) header('Content-type: image/gif');
|
||
if (preg_match("/.png$/i", $_GET['filename'])) header('Content-type: image/png');
|
||
*/
|
||
|
||
function str_split_php4( $text, $split = 1 ) {
|
||
// place each character of the string into and array
|
||
$array = array();
|
||
for ( $i=0; $i < strlen( $text ); ){
|
||
$key = NULL;
|
||
for ( $j = 0; $j < $split; $j++, $i++ ) {
|
||
$key .= $text[$i];
|
||
}
|
||
array_push( $array, $key );
|
||
}
|
||
return $array;
|
||
}
|
||
|
||
function sanitize($name)
|
||
{
|
||
// Sanitize image filename (taken from http://iamcam.wordpress.com/2007/03/20/clean-file-names-using-php-preg_replace/ )
|
||
$fname=$name;
|
||
$replace="_";
|
||
$pattern="/([[:alnum:]_\.-]*)/";
|
||
$fname=str_replace(str_split_php4(preg_replace($pattern,$replace,$fname)),$replace,$fname);
|
||
return $fname;
|
||
}
|
||
|
||
// Make sure the "thumbs" directory exists.
|
||
if (!is_dir('thumbs')) { mkdir('thumbs',0700); }
|
||
|
||
// Thumbnail file name and path.
|
||
// (We always put thumbnails in jpg for simplification)
|
||
$thumbname = 'thumbs/'.sanitize($_GET['filename']).'.jpg';
|
||
|
||
if (file_exists($thumbname)) // If thumbnail exists, serve it.
|
||
{
|
||
$fd = fopen($thumbname, "r");
|
||
$cacheContent = fread($fd,filesize ($thumbname));
|
||
fclose($fd);
|
||
header('Content-type: image/jpeg');
|
||
echo($cacheContent);
|
||
}
|
||
else // otherwise, generate thumbnail, send it and save it to file.
|
||
{
|
||
|
||
// Display error image if file isn't found
|
||
if (!is_file($_GET['filename'])) {
|
||
header('Content-type: image/jpeg');
|
||
$errorimage = ImageCreateFromJPEG('images/questionmark.jpg');
|
||
ImageJPEG($errorimage,null,90);
|
||
}
|
||
|
||
// Display error image if file exists, but can't be opened
|
||
if (substr(decoct(fileperms($_GET['filename'])), -1, strlen(fileperms($_GET['filename']))) < 4 OR substr(decoct(fileperms($_GET['filename'])), -3,1) < 4) {
|
||
header('Content-type: image/jpeg');
|
||
$errorimage = ImageCreateFromJPEG('images/cannotopen.jpg');
|
||
ImageJPEG($errorimage,null,90);
|
||
}
|
||
|
||
// Define variables
|
||
$target = "";
|
||
$xoord = 0;
|
||
$yoord = 0;
|
||
|
||
if ($_GET['size'] == "") $_GET['size'] = 120; //
|
||
$imgsize = GetImageSize($_GET['filename']);
|
||
$width = $imgsize[0];
|
||
$height = $imgsize[1];
|
||
if ($width > $height) { // If the width is greater than the height it’s a horizontal picture
|
||
$xoord = ceil(($width-$height)/2);
|
||
$width = $height; // Then we read a square frame that equals the width
|
||
} else {
|
||
$yoord = ceil(($height-$width)/2);
|
||
$height = $width;
|
||
}
|
||
|
||
// Rotate JPG pictures
|
||
if (preg_match("/.jpg$|.jpeg$/i", $_GET['filename'])) {
|
||
if (function_exists('exif_read_data') && function_exists('imagerotate')) {
|
||
$exif = exif_read_data($_GET['filename']);
|
||
$ort = $exif['IFD0']['Orientation'];
|
||
$degrees = 0;
|
||
switch($ort)
|
||
{
|
||
case 6: // 90 rotate right
|
||
$degrees = 270;
|
||
break;
|
||
case 8: // 90 rotate left
|
||
$degrees = 90;
|
||
break;
|
||
}
|
||
if ($degrees != 0) $target = imagerotate($target, $degrees, 0);
|
||
}
|
||
}
|
||
|
||
$target = ImageCreatetruecolor($_GET['size'],$_GET['size']);
|
||
if (preg_match("/.jpg$/i", $_GET['filename'])) $source = ImageCreateFromJPEG($_GET['filename']);
|
||
if (preg_match("/.gif$/i", $_GET['filename'])) $source = ImageCreateFromGIF($_GET['filename']);
|
||
if (preg_match("/.png$/i", $_GET['filename'])) $source = ImageCreateFromPNG($_GET['filename']);
|
||
imagecopyresampled($target,$source,0,0,$xoord,$yoord,$_GET['size'],$_GET['size'],$width,$height);
|
||
imagedestroy($source);
|
||
|
||
//if (preg_match("/.jpg$/i", $_GET['filename'])) ImageJPEG($target,null,90);
|
||
//if (preg_match("/.gif$/i", $_GET['filename'])) ImageGIF($target,null,90);
|
||
//if (preg_match("/.png$/i", $_GET['filename'])) ImageJPEG($target,null,90); // Using ImageJPEG on purpose
|
||
ob_start(); // Start output buffering.
|
||
header('Content-type: image/jpeg'); // We always render the thumbnail in JPEG even if the source is GIF or PNG.
|
||
ImageJPEG($target,null,80);
|
||
imagedestroy($target);
|
||
|
||
$cachedImage = ob_get_contents(); // Get the buffer content.
|
||
ob_end_flush();// End buffering
|
||
$fd = fopen($thumbname, "w"); // Save buffer to disk
|
||
if ($fd) { fwrite($fd,$cachedImage); fclose($fd); }
|
||
|
||
}
|
||
|
||
?>
|