init()) != '') //{ //header('header.php'); //echo $err; //exit(); //} // get image files from directory Nava Nalanda Central Library
Test
$ss->get_images(); // set variables, done. list($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); } } ?> Slideshow