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<html>
<head>
<link href="common.css" rel="stylesheet" type="text/css" />
<link href=common_1.css rel="stylesheet" type="text/css" />
<script language="javascript" src="js.js"></script>
<script language="javascript" src=js_1.js></script>
</head>
<body background=1.jpg>
<a href="1.html">页面1</a>
<img src="1.gif" />
</body>
</html>
<html>
<head>
<base href="http://www.mysite.com/mydir/mycode/">
...
</head>
...
</html>
<?php
$html = '<html>
<head>
<link href="commo\n.css" rel="stylesheet" type="text/css" />
<link href=comm/on_1.css rel="stylesheet" type="text/css" />
<script language="javascript" src="js.js"></script>
<script language="javascript" src=js_1.js></script>
</head>
<body background=1.jpg>
<a href="1.html">页面1</a>
<img src="1.gif" />
</body>
</html>
';
echo preg_replace("/(=[\"|']|=)([a-z0-9_\/\\\\]+\.[a-z]+)/i","$1mycode/$2",$html);
?>
<html>
<head>
<link href="mycode/commo\n.css" rel="stylesheet" type="text/css" />
<link href=mycode/comm/on_1.css rel="stylesheet" type="text/css" />
<script language="javascript" src="mycode/js.js"></script>
<script language="javascript" src=mycode/js_1.js></script>
</head>
<body background=mycode/1.jpg>
<a href="mycode/1.html">页面1</a>
<img src="mycode/1.gif" />
</body>
</html>