Php/docs/function.array-chunk
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array_chunk
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
array_chunk — Split an array into chunks
Description
array_chunk
( array $array
, int $length
[, bool $preserve_keys
= FALSE
] ) : array
Chunks an array into arrays with length
elements.
The last chunk may contain less than length
elements.
Parameters
array
- The array to work on
length
- The size of each chunk
preserve_keys
- When set to
TRUE
keys will be preserved. Default isFALSE
which will reindex the chunk numerically
Return Values
Returns a multidimensional numerically indexed array, starting with zero,
with each dimension containing length
elements.
Errors/Exceptions
If length
is less than 1
E_WARNING
will be thrown and NULL
returned.
Examples
Example #1 array_chunk() example
<?php$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 ) )