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176 lines
4.4 KiB
PHP
176 lines
4.4 KiB
PHP
<?php
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/*
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PHP image slideshow - auto version - PHP > 5.0
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*/
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// set the absolute path to the directory containing the images
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define('IMGDIR', '/home/members/jelkner/sites/elkner.net/users/jelkner/web/heleneyoung/slideshow/photos/');
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// same but for www
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define('WEBIMGDIR', 'https://elkner.net/heleneyoung/slideshow/photos/');
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// set session name for slideshow "cookie"
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define('SS_SESSNAME', 'slideshow_sess');
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// global error variable
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$err = '';
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// start img session
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session_name(SS_SESSNAME);
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session_start();
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// init slideshow class
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$ss = new slideshow($err);
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if (($err = $ss->init()) != '')
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{
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header('HTTP/1.1 500 Internal Server Error');
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echo $err;
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exit();
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}
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// get image files from directory
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$ss->get_images();
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// set variables, done.
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list($curr, $caption, $first, $prev, $next, $last) = $ss->run();
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/*
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slideshow class, can be used stand-alone
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*/
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class slideshow
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{
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private $files_arr = NULL;
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private $err = NULL;
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public function __construct(&$err)
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{
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$this->files_arr = array();
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$this->err = $err;
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}
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public function init()
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{
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// run actions only if img array session var is empty
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// check if image directory exists
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if (!$this->dir_exists())
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{
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return 'Error retrieving images, missing directory';
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}
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return '';
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}
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public function get_images()
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{
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// run actions only if img array session var is empty
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if (isset($_SESSION['imgarr']))
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{
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$this->files_arr = $_SESSION['imgarr'];
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}
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else
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{
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if ($dh = opendir(IMGDIR))
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{
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while (false !== ($file = readdir($dh)))
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{
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if (preg_match('/^.*\.(jpg|jpeg|gif|png)$/i', $file))
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{
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$this->files_arr[] = $file;
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}
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}
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closedir($dh);
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}
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$_SESSION['imgarr'] = $this->files_arr;
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}
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}
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public function run()
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{
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$curr = 1;
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$last = count($this->files_arr);
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if (isset($_GET['img']))
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{
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if (preg_match('/^[0-9]+$/', $_GET['img'])) $curr = (int) $_GET['img'];
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if ($curr <= 0 || $curr > $last) $curr = 1;
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}
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if ($curr <= 1)
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{
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$prev = $curr;
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$next = $curr + 1;
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}
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else if ($curr >= $last)
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{
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$prev = $last - 1;
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$next = $last;
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}
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else
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{
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$prev = $curr - 1;
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$next = $curr + 1;
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}
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// line below sets the caption name...
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$caption = str_replace('-', ' ', $this->files_arr[$curr - 1]);
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$caption = str_replace('_', ' ', $caption);
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$caption = preg_replace('/\.(jpe?g|gif|png)$/i', '', $caption);
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$caption = ucfirst($caption);
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return array($this->files_arr[$curr - 1], $caption, 1, $prev, $next, $last);
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}
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private function dir_exists()
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{
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return file_exists(IMGDIR);
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}
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}
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?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>Slideshow</title>
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<style type="text/css">
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body {
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margin: 0;
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padding: 0;
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background-color: #ADD8E6;
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font: 100% Verdana, Arial, Helvetica, sans-serif;
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font-size: 14px;
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}
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.gallery {
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border: 1px #ccc solid;
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background-color: #FFFFFF;
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max-width: 600px;
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margin: 0 auto;
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padding: 40px;
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text-align: center;
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}
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.gallery .gallery-nav {
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margin-bottom: 40px;
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}
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.gallery .gallery-nav a:first-child {
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margin-right: 10px;
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}
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.gallery .gallery-nav a:last-child {
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margin-left: 10px;
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}
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.gallery .gallery-image img {
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max-width: 100%;
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height: auto;
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}
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.gallery .gallery-image-label {
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color: #777;
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}
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a {
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color: #333;
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}
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a:hover {
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color: #cc0000;
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}
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.sp {
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padding-right: 40px;
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}
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</style>
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</head>
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<body>
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<div class="gallery">
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<div class="gallery-nav">
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<a href="?img=<?=$first;?>">First</a>
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<a href="?img=<?=$prev;?>">Previous</a>
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<span class="sp"></span>
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<a href="?img=<?=$next;?>">Next</a>
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<a href="?img=<?=$last;?>">Last</a>
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</div>
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<div class="gallery-image">
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<img src="<?=WEBIMGDIR;?><?=$curr;?>" alt="" />
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</div>
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<p class="gallery-image-label"><?=$caption;?></p>
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</div>
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</body>
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</html>
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