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<?php $_POST['order_id']=['3','a','4']; $order_id = array_map(function($v){return filter_var($v,FILTER_VALIDATE_INT);}, $_POST['order_id']); print_r($order_id);
Output for 5.6.38, 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Array ( [0] => 3 [1] => [2] => 4 )
preferences:
162.94 ms | 408 KiB | 5 Q