<?php
header("Content-type:text/html;charset=utf-8");
/*
Hint:
get the shell find the key；）\n";
*/
echo strlen($_GET['cmd']);
if (isset($_GET['cmd']) && strlen($_GET['cmd']) <= 30) {
@exec($_GET['cmd']);
}
highlight_file(__FILE__);
echo "<br /> IP : {$_SERVER['REMOTE_ADDR']}";