php get unique sub array [duplicate]

Answer 1

This can be done with array_unique but you'll also need to use the SORT_REGULAR (PHP 5.2.9+) flag:

$array = array(
    array(1227, 146, 1, 39),
    array(1227, 146, 1, 39),
    array(1228, 146, 1, 39),
);
$array = array_unique($array, SORT_REGULAR);

Output:

Array
(
    [0] => Array
        (
            [0] => 1227
            [1] => 146
            [2] => 1
            [3] => 39
        )

    [2] => Array
        (
            [0] => 1228
            [1] => 146
            [2] => 1
            [3] => 39
        )

)

Demo!

For older versions of PHP, you could use the solution I linked to in the question's comments:

$array = array_map("unserialize", array_unique(array_map("serialize", $array)));

Hope this helps!