array_column function for multidimensional arrays with dynamic indexes-CodePudding

I have a multi dimensional array which stores my order details looks similar to the following

$Orders=Array
(
    [0] => Array
        (
            [id] => 10
            [name] => "Hello world"
            [product_id] => 1234
        )
    [1] => Array
        (
            [id] => 40
            [name] => "Test World"
            [product_id] => 6066
        )
    [2] => Array
        (
            [id] => 70
            [name] => "Sample World"
            [product_id] => 1234
        )
)

Now I want to get all the product_id to one array like below array

array:8 [▼
  0 => "1234"
  1 => "6066"
  2 => "1234"
]

I tried using phps's array_column function

$newArr_pids = array_column($result_3['orders'], "product_id");

This gives me an error but when I change this as below it works,

$newArr_pids = array_column(array_column($result_3['orders']),'0'),'product_id');

Now as in my above example since I have 3 (this can be less than 3 or more than 3) indexes, and they are dynamic, how can I correct my function to create the $newArr_pids array correctly

CodePudding user response：

$arr = array();
foreach($Orders as $key => $value) {
   $arr[] = $value['product_id'];
}

The $arr will get the values of product id

CodePudding user response：

Using array_column

<?php
    $Orders = [
        [
            "id"=>10, 
            "name"=>"Hello world", 
            "product_id"=>1234
        ],
        [
            "id"=>40, 
            "name"=>"Test world", 
            "product_id"=>6066
        ],
        [
            "id"=>70, 
            "name"=>"Sample world", 
            "product_id"=>1234
        ],
    ];
    print_r(array_column($Orders, "product_id"));
?>

Will return:

Array
(
    [0] => 1234
    [1] => 6066
    [2] => 1234
)