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run code in 150+ php & hhvm versions
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<?php function reduce($a, $b) { return $b+$a; } $array = array(1,2,3,4,5,6,7,8,9,0); $out = array_reduce($array, 'reduce'); var_dump($array); var_dump($out);
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
array(10) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) [9]=> int(0) } int(45)