3v4l.org

run code in 300+ PHP versions simultaneously
<?php function position_merge(array $arr1,array $arr2) { $result=array_merge($arr1,$arr2); array_walk($result,function(&$item,$idx){ $item["array_index"]=$idx;// Make sure this key is not used }); usort($result,function($a,$b){ return $a["position"]-$b["position"]?:$a["array_index"]-$b["array_index"]; }); array_walk($result,function(&$item){ unset($item["array_index"]); }); return $result; } $array1 = array( array('name' => 'Bob', 'position' => 1), array('name' => 'Tim', 'position' => 1), array('name' => 'Alf', 'position' => 3), array('name' => 'Jon', 'position' => 3) ); $array2 = array( array('name' => 'Tom', 'position' => 2), array('name' => 'Joe', 'position' => 2), array('name' => 'Jim', 'position' => 2), array('name' => 'Kev', 'position' => 2) ); print_r(position_merge($array1,$array2));

preferences:
37.76 ms | 402 KiB | 5 Q