A simple PHP implementation of the worst Bubble Sort

BubbleSort.php

<?php

function bubbleSort($array) {

    for($i=0;$i<sizeof($array);$i++) {
        for($j=0;$j<sizeof($array)-1;$j++) {
            if($array[$j]>$array[$j+1]) {

                $temp = $array[$j];
                $array[$j] = $array[$j+1];
                $array[$j+1] = $temp;


            }
        }
    }

    return $array;

}

$arr = array(3,5,1,2,8,7,6,9,4);

echo implode(',', bubbleSort($arr));