sort a multidimensional array using array_multisort

Question

I have this array

Array
(
    [0] => Array
        (
            [brand] => blah blah
            [location] => blah blah
            [address] =>         


        

Answer 1

Use can use usort;

function cmpDistance($a, $b) {
    return ($a['distance'] - $b['distance']);
}

usort($array, "cmpDistance");