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array_chunk

Split an array into chunks (PHP 4 >= 4.2.0, PHP 5)
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 234. 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
       )

)