3v4l.org

run code in 300+ PHP versions simultaneously
<?php function f($n) { echo $n . date("S", mktime(1,1,1,1,($n%100>10&&$n%100<20?$n:$n%10==0?10:$n%10))); echo "\n"; } f(11); f(12); f(15); f(22); f(40); f(91);

preferences:
36.77 ms | 402 KiB | 5 Q