3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $arr = array( array("item_data"=>array(1,2,3)), array("item_data"=>array(4,5,6)), array("item_data"=>array(7,8,9)) ); function merge($prev, $now) { return array_merge($prev, $now['item_data']); } $res = array_reduce($arr, "merge", array()); print_r($res);
based on FhD8L
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.2, 5.3.0 - 7.1.0
Array ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 [6] => 7 [7] => 8 [8] => 9 )
Output for 5.0.3 - 5.2.17
Warning: array_merge(): Argument #1 is not an array in /in/uL6cS on line 6 Warning: array_merge(): Argument #1 is not an array in /in/uL6cS on line 6 Warning: array_merge(): Argument #1 is not an array in /in/uL6cS on line 6
Output for 4.3.10 - 4.4.9
Array ( [0] => 0 [1] => 1 [2] => 2 [3] => 3 [4] => 4 [5] => 5 [6] => 6 [7] => 7 [8] => 8 [9] => 9 )