/**
 * curl模拟post请求
 * @param $url 请求地址
 * @param $param 请求参数
 */
function httpPost($url, $param)
    {
        if (empty($url) || empty($param)) {
            return false;
        }
        $param = http_build_query($param);
        try {
            $ch = curl_init();//初始化curl
            curl_setopt($ch, CURLOPT_URL, $url);
            curl_setopt($ch, CURLOPT_POST, 1);
            curl_setopt($ch, CURLOPT_POSTFIELDS,$param);
            curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded'));
            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
            //正式环境时解开注释
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
            $data = curl_exec($ch);//运行curl
            curl_close($ch);
            if (!$data) {
                throw new \Exception('请求出错');
            }
            return $data;
        } catch (\Exception $e) {
            (new \think\Log())->write('请求['.$url.']出现错误：'.$e->getMessage(),'log');
            return false;
        }

    }