Online PHP editor | refs for aVelD

<?php $data = [ [ 'first_name' => 'GM', 'middle_name' => null, 'last_name' => 'Akbari', 'guest_booking' =>[ [ 'booking_number' => 20008683, 'ship_code' => 'OST', 'room_no' => 'A0073', 'start_time' => 1438214400, 'end_time' => 1483142400, 'is_checked_in' => true, ] ], 'guest_account' => [ [ 'account_id' => 20009503, 'status_id' => 2, 'account_limit' => 0, 'allow_charges' => true, ] ] ], [ 'first_name' => 'Alex ', 'middle_name' => null, 'last_name' => 'Marvi', 'guest_booking' => [ [ 'booking_number' => 10000013, 'room_no' => 'B0092', 'is_checked_in' => true, ], ], 'guest_account' => [ [ 'account_id' => 10000500, 'account_limit' => 300, 'allow_charges' => true, ], ], ], ]; function sortMyArray(array &$array, $target_key) { $columnValues = []; array_walk_recursive( $array, function($v, $k, $key) use (&$columnValues) { if ($k === $key) { $columnValues[] = $v; } }, $target_key ); array_multisort($columnValues, $array); } sortMyArray($data, 'account_id'); var_export($data);