PHP排序函数-根据指定字段将数组排序

      

$sort_array = array('total_qty', 'total_price');
         $productCount = $this->countArraySort($productCount, $sh, $sort_array, 'total_price'); //统计排序      /**
 
     * @desc 统计排序
      * @author marion
      * @param array 待排序数组 $array
      * @param &array 排序条件 $sh
      * @param array 指定排序数组 $key_array
      * @param string 指定默认排序字段 $default
      * @return array 排序后数组
      */

     function countArraySort($array, &$sh, $key_array = array(), $default = 'order_num') {
         $sort_total_qty = array();
         if ($sh['order']) {
             foreach ($sh['order'] as $key => $value) {
                 foreach ($key_array as $v) {
                      if ($key == $v) {
                         switch ($value) {
                             case $v . '.asc': 
                                 foreach ($array as $value) {
                                     $sort_total_qty[] = $value[$v];
                                 }
                                 array_multisort($sort_total_qty, SORT_ASC, $array);
                                 $sh['order'][$v] = $v . '.desc';
                                 break;
                             case $v .'.desc':
                                 foreach ($array as $value) {
                                     $sort_total_qty[] = $value[$v];
                                 }
                                 array_multisort($sort_total_qty, SORT_DESC, $array);
                                 $sh['order'][$v] = $v . '.asc';
                                 break;
                             default:
                                 # code...
                                 break;
                         }
                         break;
                     }
                 }
             }
         } else {
             foreach ($array as $value) {
                 $sort_total_qty[] = $value[$default];
             }
             array_multisort($sort_total_qty, SORT_DESC, $array);
         }

         return $array;
     }