92 lines
3.4 KiB
PHP
92 lines
3.4 KiB
PHP
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<?php
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/*
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MINIGAL NANO
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- A PHP/HTML/CSS based image gallery script
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This script and included files are subject to licensing from Creative Commons (http://creativecommons.org/licenses/by-sa/2.5/)
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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")
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MiniGal Nano is created by Thomas Rybak
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Copyright 2010 by Thomas Rybak
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Support: www.minigal.dk
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Community: www.minigal.dk/forum
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Please enjoy this free script!
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USAGE EXAMPLE:
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File: createthumb.php
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Example: <img src="createthumb.php?filename=photo.jpg&width=100&height=100">
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*/
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// error_reporting(E_ALL);
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if (preg_match("/.jpg$|.jpeg$/i", $_GET['filename'])) header('Content-type: image/jpeg');
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if (preg_match("/.gif$/i", $_GET['filename'])) header('Content-type: image/gif');
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if (preg_match("/.png$/i", $_GET['filename'])) header('Content-type: image/png');
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// Display error image if file isn't found
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if (!is_file($_GET['filename'])) {
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header('Content-type: image/jpeg');
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$errorimage = ImageCreateFromJPEG('images/questionmark.jpg');
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ImageJPEG($errorimage,null,90);
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}
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// Display error image if file exists, but can't be opened
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if (substr(decoct(fileperms($_GET['filename'])), -1, strlen(fileperms($_GET['filename']))) < 4 OR substr(decoct(fileperms($_GET['filename'])), -3,1) < 4) {
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header('Content-type: image/jpeg');
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$errorimage = ImageCreateFromJPEG('images/cannotopen.jpg');
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ImageJPEG($errorimage,null,90);
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}
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// Define variables
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$target = "";
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$xoord = 0;
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$yoord = 0;
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if ($_GET['size'] == "") $_GET['size'] = 120; //
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$imgsize = GetImageSize($_GET['filename']);
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$width = $imgsize[0];
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$height = $imgsize[1];
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if ($width > $height) { // If the width is greater than the height it’s a horizontal picture
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$xoord = ceil(($width-$height)/2);
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$width = $height; // Then we read a square frame that equals the width
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} else {
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$yoord = ceil(($height-$width)/2);
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$height = $width;
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}
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// Rotate JPG pictures
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if (preg_match("/.jpg$|.jpeg$/i", $_GET['filename'])) {
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if (function_exists('exif_read_data') && function_exists('imagerotate')) {
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$exif = exif_read_data($_GET['filename']);
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$ort = $exif['IFD0']['Orientation'];
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$degrees = 0;
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switch($ort)
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{
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case 6: // 90 rotate right
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$degrees = 270;
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break;
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case 8: // 90 rotate left
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$degrees = 90;
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break;
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}
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if ($degrees != 0) $target = imagerotate($target, $degrees, 0);
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}
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}
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$target = ImageCreatetruecolor($_GET['size'],$_GET['size']);
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if (preg_match("/.jpg$/i", $_GET['filename'])) $source = ImageCreateFromJPEG($_GET['filename']);
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if (preg_match("/.gif$/i", $_GET['filename'])) $source = ImageCreateFromGIF($_GET['filename']);
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if (preg_match("/.png$/i", $_GET['filename'])) $source = ImageCreateFromPNG($_GET['filename']);
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imagecopyresampled($target,$source,0,0,$xoord,$yoord,$_GET['size'],$_GET['size'],$width,$height);
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imagedestroy($source);
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if (preg_match("/.jpg$/i", $_GET['filename'])) ImageJPEG($target,null,90);
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if (preg_match("/.gif$/i", $_GET['filename'])) ImageGIF($target,null,90);
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if (preg_match("/.png$/i", $_GET['filename'])) ImageJPEG($target,null,90); // Using ImageJPEG on purpose
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imagedestroy($target);
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?>
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