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例如博客的展示窗
<div class="codetitle"><a style="CURSOR: pointer" data="29638" class="copybut" id="copybut29638" onclick="doCopy('code29638')"> 代码如下:<div class="codebody" id="code29638">
<?php
/**
Filename : img.php
Author : freemouse
web : www.cnphp.info
email :freemouse1981@gmail.com
Date : 2010/12/27
Usage:
<img src=img.php?folder=images2/>
***/
if($_GET['folder']){
$folder=$_GET['folder'];
}else{
$folder='/images/';
}
//存放图片文件的位置
$path = $_SERVER['DOCUMENT_ROOT']."/".$folder;
$files=array();
if ($handle=opendir("$path")) {
while(false !== ($file = readdir($handle))) {
if ($file != "." && $file != "..") {
if(substr($file,-3)=='gif' || substr($file,-3)=='jpg') $files[count($files)] = $file;
}
}
}
closedir($handle); $random=rand(0,count($files)-1);
if(substr($files[$random],-3)=='gif') header("Content-type: image/gif");
elseif(substr($files[$random],-3)=='jpg') header("Content-type: image/jpeg");
readfile("$path/$files[$random]");
?>
（编辑：李大同）
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