3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array_1 = array('something1', something2); $array_2 = array('something3', something4); $array_3 = array(); $array_4 = array('something1', something2); $list = array($array_1,$array_2,$array_3,$array_4); array_walk($list,function(&$value, $key){ });

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29.85 ms | 402 KiB | 5 Q