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. mm"; } echo "Before ...:\n"; array_walk($fruits, 'test_print'); ?>
Output for 4.3.0 - 7.1.0
Before ...: lemon. mmorange. mmbanana. mmapple. mm