PHP数组可读[关闭]

Question

I have an Array format.

Array
(
    [0] => Array
        (
            [order_id] => 1
        )

    [1] => Array
        (
            [order_id] => 11
        )

    [2] => Array
        (
            [order_id] => 12
        )

)

It should to be changed the array format to be like this format:

[1,11,12];

Please help. Thank you in advanced.

Answer 1

For (PHP 5 >= 5.5.0, PHP 7) you can use array_column and lower than that you can use array_map function (for PHP < 5.3) you need to define saperate function for array_map instead of anonymous function.

$array = array
(
    '0' => array
    (
        'order_id' => 1
    ),

    '1' => array
    (
        'order_id' => 11
    ),

    '2' => array
    (
        'order_id' => 12
    )

);

$new_array = array_column($array, 'order_id');
print_r($new_array);


$new_array = array_map(function($element) {
    return $element['order_id'];
}, $array);
print_r($new_array);

output

Array
(
    [0] => 1
    [1] => 11
    [2] => 12
)