php提取微信账单的有效信息

function deal_wechat_return_result($reponse)
 {
 $result = array();
 $reponse = str_replace(","," ",$reponse);
 $reponse = explode("`",$reponse);
 $total_order_count =( count($reponse) - 6 ) / 24;
 for($i = 0; $i< $total_order_count; $i++)
 {
  $base_index = 24 * $i;
  $result[$reponse[$base_index + 7]] = array(
  'wechat_order_no' =  $reponse[$base_index + 6],
  'order_count' =  $reponse[$base_index + 13],
  'order_discount' =  $reponse[$base_index + 23]
  );
 }
 return $result;
 }