php实现冒泡排序算法

<?php
/**
 * Created by PhpStorm.
 * User: benny
 * Date: 18-11-20
 * Time: 下午4:21
 */
/**
 * @param $array
 */
    function bubble_sort($array){
        $count = count($array);
        var_dump($count);
        echo "<br/>";
        print_r($array);
        echo "<br/>";

        for ($i=1;$i<=$count-1;$i++){       //$count个数，需要冒泡$count-1唐
            for ($j=0;$j<$count-$i;$j++){   //$i为已经进行的次数，保证最后（$count-$i）位为最大（小）位，无需进行
                if ($array[$j]>$array[$j+1]){
                    $temp = $array[$j];
                    $array[$j] = $array[$j+1];
                    $array[$j+1] = $temp;
                }
            }
        }
        print_r($array);
    }

    bubble_sort([1,28,3,4,6,9,76,2,4]);