function getCurl($url,$data=null,$method='post',$https=true){

    //1. 初始化

    $ch = curl_init();

    //2.设置参数

    curl_setopt($ch, CURLOPT_URL,$url);

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//只获取页面内容,但不输出 return transfer

    if($https){

        curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,false);

        curl_setopt($ch,CURLOPT_SSL_VERIFYHOST,false);

    }

    if($method=='post'){

        curl_setopt($ch,CURLOPT_POST,true);

        curl_setopt($ch,CURLOPT_POSTFIELDS,$data);

    }

    //3.调用接口

    $res = curl_exec($ch);

    if(curl_errno($ch)){

        //请求失败,返回错误信息

        return curl_error($ch);

    }

    //4.关闭curl

    curl_close($ch);

    return $res;

}