array_chunk

by gowtham 2010-09-17 11:56:19

array_chunk â Split an array into chunks
Description
array array_chunk ( array $input , int $size [, bool $preserve_keys = false ] )

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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