thinkphp5.0 中简单处理微信支付异步通知

 public function wx_notify(){
         $postStr = $GLOBALS["HTTP_RAW_POST_DATA"];
         libxml_disable_entity_loader(true);
         $xml = json_decode(json_encode(simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
         if($xml['out_trade_no']){
             $rs = Db::name('order_jiaoche')->where(array('order_sn'=>$xml['out_trade_no']))->find();
             if($rs){
                 Db::name('order_jiaoche')->where(array('order_sn'=>$xml['out_trade_no']))->update(array('ispay'=>1));
                 echo 'success';
             }
         }
          /*
          调试所用
          $fp = fopen('notify.txt','a+');
          fwrite($fp,"\n _______GET________");
          fwrite($fp,var_export($xml,true));
          fwrite($fp,"\n ________postObj________");
          fwrite($fp,var_export($xml,true));
          fwrite($fp,'【 Now 】:  '. date("Y-m-d H:i:s") ."\n");
          fclose($fp);
          print_r($xml);
          */
     }