Online PHP editor | refs for Imbao

<?php $arr1 = [ [ 'id' => '1', 'order' => '123238' ], [ 'id' => '2', 'order' => '33278' ], [ 'id' => '3', 'order' => '8892372' ] ]; $arr2 = [ [ 'id' => '1', 'order' => '349483' ], [ 'id' => '2', 'order' => '9837283' ], [ 'id' => '3', 'order' => '33278' ] ]; $arr1 = array_column($arr1, null , 'order'); $arr2 = array_column($arr2, null , 'order'); print_r(array_intersect_key($arr1,$arr2));