96 lines
3.3 KiB
PHP
96 lines
3.3 KiB
PHP
<?php
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//////////////////////////////////////////////////////////////
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/// phpThumb() by James Heinrich <info@silisoftware.com> //
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// available at http://phpthumb.sourceforge.net ///
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//////////////////////////////////////////////////////////////
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/// //
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// phpThumb.demo.random.php //
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// James Heinrich <info@silisoftware.com> //
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// //
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// Display a random image from a specified directory. //
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// Run with no parameters for usage instructions. //
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// //
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//////////////////////////////////////////////////////////////
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function SelectRandomImage($dirname='.', $portrait=true, $landscape=true, $square=true) {
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// return a random image filename from $dirname
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// the last 3 parameters determine what aspect ratio of images
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// may be returned
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$possibleimages = array();
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if ($dh = opendir($dirname)) {
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while ($file = readdir($dh)) {
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if (is_file($dirname.'/'.$file) && eregi('\.(jpg|jpeg|gif|png|tiff|bmp)$', $file)) {
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if ($gis = @GetImageSize($dirname.'/'.$file)) {
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if ($portrait && ($gis[0] < $gis[1])) {
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// portrait
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$possibleimages[] = $file;
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} elseif ($landscape && ($gis[0] > $gis[1])) {
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// landscape
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$possibleimages[] = $file;
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} elseif ($square) {
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// square
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$possibleimages[] = $file;
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}
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}
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}
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}
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closedir($dh);
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}
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if (empty($possibleimages)) {
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return false;
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}
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if (phpversion() < '4.2.0') {
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mt_srand(time());
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}
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$randkey = mt_rand(0, count($possibleimages) - 1);
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return realpath($dirname.'/'.$possibleimages[$randkey]);
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}
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if (@$_REQUEST['dir']) {
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if (is_dir($_REQUEST['dir'])) {
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if (!@$_REQUEST['o']) {
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$_REQUEST['o'] = 'PLS';
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}
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$_REQUEST['o'] = strtoupper($_REQUEST['o']);
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$portrait = (strpos(@$_REQUEST['o'], 'P') !== false);
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$landscape = (strpos(@$_REQUEST['o'], 'L') !== false);
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$square = (strpos(@$_REQUEST['o'], 'S') !== false);
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$randomSRC = SelectRandomImage($_REQUEST['dir'], $portrait, $landscape, $square);
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if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
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$randomSRC = str_replace('\\', '/', eregi_replace('^'.realpath(@$_SERVER['DOCUMENT_ROOT']), '', realpath($randomSRC)));
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} else {
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$randomSRC = str_replace(realpath(@$_SERVER['DOCUMENT_ROOT']), '', realpath($randomSRC));
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}
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$otherParams = array();
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foreach ($_GET as $key => $value) {
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if (($key == 'dir') || ($key == 'o')) {
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continue;
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}
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if (is_array($value)) {
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foreach ($value as $vkey => $vvalue) {
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$otherParams[] = urlencode($key).'['.urlencode($vkey).']='.urlencode($vvalue);
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}
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} else {
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$otherParams[] = urlencode($key).'='.urlencode($value);
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}
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}
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header('Location: ../phpThumb.php?src='.urlencode($randomSRC).'&'.implode('&', $otherParams));
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exit;
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} else {
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die($_REQUEST['dir'].' is not a directory');
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}
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} else {
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echo '<html><body>Usage: <b>'.basename($_SERVER['PHP_SELF']).'?dir=<i><directory></i>&<i><phpThumb parameters></i></b>&o=<i>(P|L|S)</i><br><br>Examples:<ul>';
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echo '<li>'.basename($_SERVER['PHP_SELF']).'?./images/&o=L <i>(landscape images only)</i></li>';
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echo '<li>'.basename($_SERVER['PHP_SELF']).'?./images/&o=PS <i>(portrait or square images only)</i></li>';
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echo '</ul></body></html>';
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}
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?>
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