Split array into a specific number of chuncks

array_chunk_split.php

<?php
/**
 * Split array into a specific number of chuncks
 * 
 * @param array $data
 * @param $chunks Number of chunks
 * @return array
 */
function partition(Array $data, $chunks) {
    $result = array();
    $per_chunk = ceil(count($data) / $chunks);

    $counter = 0;
    foreach ($data as $row) {
        $result[floor($counter / $per_chunk)][] = $row;

        $counter++;
    }

    return $result;
}

Input:

Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
    [5] => 6
    [6] => 7
    [7] => 8
)

Output:

Array
(
    [0] => Array
        (
            [0] => 1
            [1] => 2
            [2] => 3
        )

    [1] => Array
        (
            [0] => 4
            [1] => 5
            [2] => 6
        )

    [2] => Array
        (
            [0] => 7
            [1] => 8
        )

)