1：PHP随机显示图片
- <?php
- /*
- * Author: http://www.yox.net.ru
- */
- $url = "./images"; //注意:图片文件夹路径，不可含有'/'；
- $files = array();
- if(false !== ($handle = @opendir($url)))
- {
- while($file = readdir($handle))
- {
- if(($file !== ".")&&($file !== ".."))
- {
- if((substr($file,-3) == "gif") || (substr($file,-3) == "jpg") || (substr($file,-3) == "png"))
- $files[count($files)] = $file;
- }
- }
- closedir($handle);
- $random = rand(0,(count($files)-1)); //设定随机数的范围;
- //根据文件类型,设置输出的文件类型;
- if(substr($files[$random],-3) == "gif")
- header("Content-type:image/gif");
- elseif(substr($files[$random],-3) == "jpg")
- header("Content-type:image/jpeg");
- elseif(substr($files[$random],-3) == "png")
- header("Content-type:image/png");
- readfile("$url/$files[$random]"); //读文件,显示图片;
- }else
- echo "<b>图片目录<font color=red>$url</font>不存在!请重新设置!</b>";
- ?>
2：PHP随机图片
创建名为1到15的gif图片,随机调用显示.（注意，文件名为1.gif到15.gif之间）
可用于论坛头像,嘿嘿…
- <?readfile(rand(1,15).".gif");?>
