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array_chunk

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Split an array into chunks

Syntax

array_chunk ( array $array , int $size [, bool $preserve_keys = FALSE ] ) : array

Parameters

array

The array to work on

size

The size of each chunk

preserve_keys

When set to TRUE keys will be preserved. Default is FALSE which will reindex the chunk numerically

Return

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

Examples

array size

<?

$array = array('a', 'b', 'c', 'd', 'e', 'f');
$size = 2;

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

print_r($return);

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

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

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

)

preserve_keys

<?

$array = array('a', 'b', 'c', 'd', 'e', 'f');
$size = 2;
$preserve_keys = true;

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

print_r($return);

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

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

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

)

Internal

array_slice

array_splice

External

PHP