- array_reduce: documentation ( source)
- print_r: documentation ( source)
- array_merge: documentation ( source)
<?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);