3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function rsum($v, $w) { $v += $w; return $v; } function rmul($v, $w) { $v *= $w; return $v; } $a = array(1, 2, 3, 4, 5); $x = array(); $b = array_reduce($a, "rsum");
based on JUf2R
Output for 4.3.0 - 7.1.0