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@ 2014-04-28T08:17:14Z

<?PHP
$s1 = $_GET[md5($_SERVER['HTTP_USER_AGENT'])];
$s2 = $_GET[md5($_SERVER['REMOTE_ADDR'])];
if ($s1!== $s2) {
    if (md5($s1)===hash('md5',$s2)) {
		if (hash('sha512',$s1,true)!==hash('sha512',$s2,true)) echo 'Flag';
    }
}
?>

Output
Performance
VLD
References
Branches

hash: documentation ( source)
md5: documentation ( source)

preferences:dark modelive preview

45.47 ms | 402 KiB | 5 Q