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