Merge array with same multiple keys [duplicate]

I have this multidimensional array that i just make

array (
  0 => 
  array (
    'warehouse_zone_id' => 1,
    'warehouse_area_id' => 1,
  ),
  1 => 
  array (
    'warehouse_zone_id' => 2,
    'warehouse_area_id' => 1,
  ),
  2 => 
  array (
    'warehouse_zone_id' => 3,
    'warehouse_area_id' => 3,
  ),
  3 => 
  array (
    'warehouse_zone_id' => 4,
    'warehouse_area_id' => 3,
  ),
)  

i want to merge the array so it become like this

array (
  0 => 
  array (
    'warehouse_zone_id' => [1,2],
    'warehouse_area_id' => 1,
  ),
  1 => 
  array (
    'warehouse_zone_id' => [3,4],
    'warehouse_area_id' => 3,
  ),
)  

i've tried array_merge, array_merge_recursive but im not getting the results that i want