3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php function tail_factorial($n, $acc = 1) { if ($n == 1) { return $acc; } return tail_factorial($n-1, $n * $acc); } echo tail_factorial(500);
based on GTkhL
Output for 5.6.0 - 5.6.30, hhvm-3.18.5 - 3.22.0, 7.0.0 - 7.3.0rc3
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