本文实例讲述了php实现URL加密解密的方法。分享给大家供大家参考，具体如下：
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<html xmlns="http://www.w3.org/1999/xhtml" lang="zh-CN">
<head>
<meta http-equiv="content-type" content="text/html; charset=gb2312" />
<meta http-equiv="content-language" content="zh-CN" />
<meta http-equiv="pragma" content="no-cache" />
<meta http-equiv="expires" content="0" />
<meta http-equiv="MSThemeCompatible" content="Yes" />
<meta http-equiv="imagetoolbar" content="no" />
<meta http-equiv="widow-target" content="_top" />
<meta name="robots" content="index, follow" />
<meta name="author" content="3945, [email]ljm77@km169.net[/email]" />
<meta name="keywords" content="" />
<meta name="description" content="" />
<meta name="copyright" content="Copyright 3945 All Rights Reserved" />
<title>无标题文档</title>
<style type="text/css">
<!--
a, a:link{text-decoration: none; color:#000000; font-size:9pt;} a:visited{text-decoration: none; color:#000000;} a:hover{text-decoration: underline; color:red;}
body, td, p, li, div, select{font-size:9pt; font-family:"宋体";}
-->
</style>
</head>
<body>
<?php
function query_encode($sQuery)
{//加密链接
if(strlen($sQuery)==0)
{
return '';
}
else
{
$s_tem = preg_replace("/&/i", '&', $sQuery);
$s_tem = preg_replace("/&/i", '&', $s_tem);
$a_tem = explode('&', $s_tem);
shuffle($a_tem);
$s_tem = implode('&', $a_tem);
$s_tem = rawurlencode($s_tem);
$s_tem = base64_encode($s_tem);
$s_tem = strrev($s_tem);
return $s_tem;
}
}
function query_decode($sEncode)
{//解密链接
if(strlen($sEncode)==0)
{
return '';
}
else
{
$s_tem = strrev($sEncode);
$s_tem = base64_decode($s_tem);
$s_tem = rawurldecode($s_tem);
return $s_tem;
}
}
function rebuild_GET()
{//重写$_GET全局变量
$_GET = array();
$s_query = $_SERVER['QUERY_STRING'];
if(strlen($s_query)==0)
{
return;
}
else
{
$s_tem = query_decode($s_query);
$a_tem = explode('&', $s_tem);
foreach($a_tem as $val)
{
$tem = explode('=', $val);
$_GET[$tem[0]] = $tem[1];
}
}
}
rebuild_GET();
echo 'GET:<pre>'.print_r($_GET, true).'</pre>';
function testGET()
{
echo 'Function GET:<pre>'.print_r($_GET, true).'</pre>';
}
testGET();
?>
<br /><br /><br />
<?
for($i=1; $i<10; $i++)
{
$s_url = query_encode('ac=index:logo& style="color: #007700">.$i);
echo sprintf('<a href="?%s">TEST: %s</a><br />', $s_url, $s_url);
}
?>
</body>
</html>
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希望本文所述对大家PHP程序设计有所帮助。