php二维数组快速排序算法的实现代码

<&＃63;php 
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; $i 1,'score'=>76), 
  array('sid'=>2,'score'=>93), 
  array('sid'=>3,'score'=>68.5), 
  array('sid'=>4,'score'=>82.5), 
  array('sid'=>5,'score'=>60.5) 
); 
print_r(Bubble::main($arr));