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@ 2022-12-16T07:45:38Z

<?php

$array = Array
(
    '0' => Array
        (
            'created_at' => 1991,
            'updated_at' => 1992,
            'customer_name' => 'john doe',
            'line_items' => Array
                
                         (
                             '0' => Array
                               (
                                   'name' => 'Hello world poduct',
                                   'price' => 800.00,
                                   'id' => 123,
                                   'quantity' => 2
                                ),
                             '1' => Array
                               (
                                   'name' => 'Hello world product 2',
                                   'price' => 100.00,
                                   'id' => 456,
                                   'quantity' => 1
                                )
                          )
        ),

    '1' => Array
        (
            'created_at' => 1992,
            'updated_at' => 1993,
            'customer_name' => 'Guido van Rossum',
            'line_items' => Array
                
                         (
                             '0' => Array
                               (
                                   'name' => 'Hello world product',
                                   'price' => 800.00,
                                   'id' => 123,
                                   'quantity' => 2    
                                ),
                             '1' => Array
                               (
                                   'name' => 'Hello world poduct 2',
                                   'price' => 100.00,
                                   'id' => 456,
                                   'quantity' => 3
                                ),
                             '2' => Array
                               (
                                   'name' => 'Hello world poduct 3',
                                   'price' => 400.00,
                                   'id' => 116,
                                   'quantity' => 5
                                )
                          )
                )
);
var_export(
    array_column(
        array_merge(
            ...array_column($array,'line_items')
        ),
        'quantity'
    )
);

Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13: array ( 0 => 2, 1 => 1, 2 => 2, 3 => 3, 4 => 5, )

preferences:dark modelive previewkey bindings

81.91 ms | 406 KiB | 5 Q