122 lines
2.5 KiB
PHP
122 lines
2.5 KiB
PHP
<?php
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$shortPath = $_SERVER["PATH_INFO"];
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if ($shortPath == '/') $shortPath = '';
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// extra security check to avoid /photos/index/../.. like urls, maybe useless but..
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if (strpos($shortPath, '..') !== false) die(".. found in url");
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$scriptPath = $_SERVER["SCRIPT_NAME"];
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// get all images in an array
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$images = array();
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$files = scandir("images".dirname($shortPath));
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foreach ($files as $file) {
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$ext = strtolower(substr($file, -4));
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if ($ext == ".jpg" or $ext == ".png")
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$images[] = $file;
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}
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// find the image position
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$pos = array_search(basename($shortPath), $images);
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if ($pos === false) die("Image not found");
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// get prev and next images
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$prevImage = '';
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$nextImage = '';
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if ($pos > 0)
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$prevImage = $images[$pos-1];
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if ($pos < sizeof($images))
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$nextImage = $images[$pos+1];
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// template variables
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$imageUrl = dirname($scriptPath)."/images$shortPath";
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if ($nextImage === '') {
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$nextImageUrl = '';
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$nextPageUrl = '';
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} else {
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$nextImageUrl = dirname($scriptPath)."/images".dirname($shortPath)."/$nextImage";
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$nextPageUrl = dirname($_SERVER["REQUEST_URI"])."/$nextImage";
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}
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if ($prevImage === '') $prevPageUrl = '';
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else $prevPageUrl = dirname($_SERVER["REQUEST_URI"])."/$prevImage";
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$directoryUrl = dirname($_SERVER["SCRIPT_NAME"])."/index".dirname($shortPath);
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header('Content-Type: text/html; charset=utf-8');
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header('Expires: '.gmdate('D, d M Y H:i:s \G\M\T', time() + 3600));
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?>
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<html>
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<head>
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<style type="text/css">
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html, body {
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height: 100%;
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}
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body {
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margin: 0;
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text-align: center;
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background: black;
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color: white;
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}
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#theimage {
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max-width: 100%;
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max-height: 100%;
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}
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a {
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color: white;
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text-decoration: none;
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}
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#next, #previous, #up {
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position: fixed;
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font-size: 4em;
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font-weight: bold;
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}
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#up {
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top: 0;
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left: 0;
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}
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#next {
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top: 50%;
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right: -0;
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}
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#previous {
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top: 50%;
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left: 0;
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}
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img {
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border: 0;
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}
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</style>
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<?php if ($nextImageUrl !== '') { ?>
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<link rel="prefetch" href="<?php echo $nextImageUrl ?>" />
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<link rel="prefetch" href="<?php echo $nextPageUrl ?>" />
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<?php } ?>
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</head>
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<body>
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<a href="<?php echo $imageUrl ?>"><img src="<?php echo $imageUrl ?>" id="theimage" /></a>
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<div id="up">
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<a href="<?php echo $directoryUrl ?>" title="Back to directory">^</a>
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</div>
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<?php if ($nextPageUrl !== '') { ?>
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<div id="next">
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<a href="<?php echo $nextPageUrl ?>" title="Next image">></a>
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</div>
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<?php } ?>
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<?php if ($prevPageUrl !== '') { ?>
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<div id="previous">
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<a href="<?php echo $prevPageUrl ?>" title="Previous image"><</a>
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</div>
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<?php } ?>
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</body>
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</html>
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