PHP 快速排序

<?php
//Quick Sort




function quickSort(array $array){

  static $run = 0;  

  $len = count($array);

  if($len <= 1) return $array;

  $arrleft=array();

  $arrright=array();

  $flag = $array[0];

  for($i=1;$i<$len;$i++){
	
	  if($array[$i]<=$flag){

		$arrleft[]=$array[$i];

	  }else{

		$arrright[] = $array[$i];

	  }

  }

   $arrleft = quickSort($arrleft);
   $arrright = quickSort($arrright);
  $run++;

  return array_merge($arrleft,array($flag),$arrright);
}

$data= array(10,12,43,32,123,12);
$newarr = quickSort($data);

print_r($newarr);
?>