在目录中使用php递归地替换长文本字符串

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1条回答

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1楼 · 发布于 2024-05-20 15:01:46

我以前确实看到过，第一行被感染的文件是这样的：

<?php ...  obfuscated code  ..... ?><?php

利用此漏洞将在打开php标记之前在第一行插入一堆php。你知道吗

如果您想用php修复它，您可以使用以下内容：

#!/usr/local/bin/php
<?php
$arr = file($argv[1]);
if (preg_match ('/^<\?php(.*)<\?php/', array_shift ($arr), $m)) {
  array_unshift ($arr,str_replace($m[0],'<?php',$l));
  file_put_contents($in,join ("",$arr));
}

如果你把它保存在文件里修复.php，你可以这样称呼它

find /path/to/dir/with/php/files -name "*.php" -exec ./fix.php {} \;

在php中进行递归文件搜索会有点愚蠢，因为find会更容易。你知道吗

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