3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $fruits = array("d" => "lemon", "a" => "orange", "b" => "banana", "c" => "apple"); function test_print($item, $key) { echo "$item<br />"; } array_walk($fruits, 'test_print'); ?>
Output for 4.3.0 - 7.1.0
lemon<br />orange<br />banana<br />apple<br />