3v4l.org

run code in 300+ PHP versions simultaneously
<?php $id = "1%0AUNION 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?!';

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30.4 ms | 402 KiB | 5 Q