src/Gateways/Wechat.php
public function find($out_trade_no = '')
    {
        $this->config['out_trade_no'] = $out_trade_no;
        $this->unsetTradeTypeAndNotifyUrl();
        return $this->getResult($this->gateway_query);
    }
public function find($out_trade_no = '')
    {
        $this->config['out_trade_no'] = $out_trade_no;
        $this->unsetTradeTypeAndNotifyUrl();
        return $this->getResult($this->gateway_query);
    }
查询订单状态
@param string $out_trade_no
@return array
@throws GatewayException