PHP实现自动对图片进行滚动显示的方法_

1、PHP实现自动对图片进行滚动显示的方法_ 这篇文章主要介绍了PHP实现自动对图片进行滚动显示的方法,涉及php操作图片特效的技巧,具有肯定参考借鉴价值,需要的伴侣可以参考下 本文实例讲解并描述了PHP实现自动对图片进行滚动显示的方法。分享给大家供大家参考。具体如下： 指定某个图片名目，该程序自动在页面上滚动展现每一张图片，用法方法： 1. 创建一个幻灯片的图像文件夹。 2. 删除图像文件夹中的幻灯片。 3. 将下面代码编码后，粘贴在一个文本文件中，命名为“index.php” 4. 上传文件到一个名目中 5. 更换第6和8行为你对应的设置。 6. 运行 (用法第4步中设置的URL) 代码如下：

2、 代码如下: ? /* PHP image slideshow - auto version - PHP5 */ / set the absolute path to the directory containing the images define (IMGDIR, /home/devel/public_html/ / same but for define (WEBIMGDIR, /images/slideshow/); / set session name for slideshow cookie define (SS_SESSNAME, slideshow_sess); / glob

3、al 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, d

4、one. 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

5、if img array session var is empty / check if image directory exists if (!$this-dir_exists() return Error retrieving images, missing directory; return ; public function get_images() / run actions only if img array session var is empty if (isset($_SESSIONimgarr) $this-files_arr = $_SESSIONimgarr; else

6、 if ($dh = opendir(IMGDIR) while (false != ($file = readdir($dh) if (preg_match(/.*.(jpg|jpeg|gif|png)$/i, $file) $this-files_arr = $file; closedir($dh); $_SESSIONimgarr = $this-files_arr; public function run() $curr = 1; $last = count($this-files_arr); if (isset($_GETimg) if (preg_match(/0-9+$/, $_

7、GETimg) $curr = (int) $_GETimg; if ($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_ar

8、r$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 -/W3

9、C/DTD XHTML 1.0 Transitional/EN html xmlns= head meta http-equiv=Content-Type content=text/html; charset=utf-8 / titleSlideshow/title style type=text/css bodymargin: 0;padding: 0;font: 100% Verdana, Arial, Helvetica, sans-serif;font-size: 14px; div#galleryborder: 1px #ccc solid;width: 600px;margin:

10、40px auto;text-align: center; div#gallery imgmargin: 20px;border: 2px #004694 solid; div#gallery pcolor: #004694; div#gallery div.pnpadding: 10px;margin: 0 5px;border-top: 1px #ccc solid; acolor:#333; a:hovercolor:#cc0000; a.sppadding-right: 40px; /style /head body div id=gallery img src=?=WEBIMGDIR;?=$curr;? alt= / p?=$caption;?/p div class=pn a href=?img=?=$first;?First/a