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array_chunk

Description

The array_chunk of Array for PHP splits an array into chunks.

Syntax

array_chunk(
    array $array,
    int $length,
    bool $preserve_keys = false
): array

Parameters

array

The array to work on.

length

The size of each chunk.

preserve_keys

Default is false which will reindex the chunk numerically. Keys will be preserved when set to true.

Return

Returns a multidimensional numerically indexed array, starting with zero, with each dimension containing length elements.

Examples

1 · array length

<?

$array =
[
    "a",
    "b",
    "c",
    "d",
    "e",
    "f"
];
$length = 2;

$return = array_chunk($array, $length);

print_r($return);

Array
(
    [0] => Array
        (
            [0] => a
            [1] => b
        )

    [1] => Array
        (
            [0] => c
            [1] => d
        )

    [2] => Array
        (
            [0] => e
            [1] => f
        )

)

2 · preserve_keys · false

<?

$array =
[
    "a",
    "b",
    "c",
    "d",
    "e",
    "f"
];
$length = 2;
$preserve_keys = false;

$return = array_chunk($array, $length, $preserve_keys);

print_r($return);

Array
(
    [0] => Array
        (
            [0] => a
            [1] => b
        )

    [1] => Array
        (
            [0] => c
            [1] => d
        )

    [2] => Array
        (
            [0] => e
            [1] => f
        )

)

3 · preserve_keys · true

<?

$array =
[
    "a",
    "b",
    "c",
    "d",
    "e",
    "f"
];
$length = 2;
$preserve_keys = true;

$return = array_chunk($array, $length, $preserve_keys);

print_r($return);

Array
(
    [0] => Array
        (
            [0] => a
            [1] => b
        )

    [1] => Array
        (
            [2] => c
            [3] => d
        )

    [2] => Array
        (
            [4] => e
            [5] => f
        )

)