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array_chunk

PHP Manual
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array_chunk

(PHP 4 >= 4.2.0, PHP 5)

array_chunk -- Split an array into chunks

Description

array array_chunk ( array input, int size [, bool preserve_keys] )

Chunks an array into size large chunks. The last chunk may contain less than size elements.

Parameters

input: 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 Values

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

Errors/Exceptions

If size is less than 1 E_WARNING will be thrown and NULL returned.

Examples

Example 1. array_chunk() example


<?php
$input_array = array('a', 'b', 'c', 'd', 'e');
print_r(array_chunk($input_array, 2));
print_r(array_chunk($input_array, 2, true));
?>

The above example will output:

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

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

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

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

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

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

)

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