3v4l.org

run code in 300+ PHP versions simultaneously
<?php function fact($x) { if ($x == 0 || $x == 1) { return $x; } else { return $x * (fact($x - 1)); } } echo fact(12);
Output for 5.4.8 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
479001600
preferences:
192.98 ms | 404 KiB | 235 Q