3v4l.org

run code in 300+ PHP versions simultaneously
<?php $id = "1%0bUNION SELECT 1,2,3,4,5,6 -- -"; echo (preg_match('/[0-9]+/m', $id)) ? 'This is a valid ID' : 'Are you trying to hack me?!';

preferences:
30.59 ms | 402 KiB | 5 Q