二维数组快速排序实例

class Bubble {
    private function __construct() {
    }
    private static function sortt($data) {
        if (count ( $data ) <= 1) {
          return $data;
        }
        $tem = $data [0]['score'];
        $leftarray = array ();
        $rightarray = array ();
        for($i = 1; $i < count ( $data ); $i ++) {
            if ($data [$i]['score'] <= $tem ) {
                $leftarray[] = $data[$i];
            } else {
                $rightarray[] = $data[$i];
            }
        }
        $leftarray=self::sortt($leftarray);
        $rightarray=self::sortt($rightarray);
        $sortarray = array_merge ( $leftarray, array ($data[0]), $rightarray );
        return $sortarray;
    }
    public static function main($data) {
        $ardata = self::sortt ( $data );
        return $ardata;
    }
}

$arr=array(
    array('sid'=>1,'score'=>76),
    array('sid'=>2,'score'=>93),
    array('sid'=>3,'score'=>68.5),
    array('sid'=>4,'score'=>82.5),
    array('sid'=>5,'score'=>60.5)
);
print_r(Bubble::main($arr));