PHP: 'rotate' an array?

Question

is it possible to easily \'rotate\' an array in PHP ?

Like this: 1, 2, 3, 4 -> 2, 3 ,4 ,1

Is there some kind of built-in PHP function for this?

Answer 1

you can use this function:

    function arr_rotate(&$array,$rotate_count) {
        for ($i = 0; $i < $rotate_count; $i++) {
            array_push($array, array_shift($array));
        }
    }

usage:

    $xarr = array('1','2','3','4','5');
    arr_rotate($xarr, 2);
    print_r($xarr);

result:

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