//1.类中定义静态方法

class FtpService{

/**

 * 请求外网

 * @param $url  外网接口url

 * @param bool $params  参数，拼接字符串 post请求可以为数组

 * @param int $ispost  是否是post请求

 * @return array|bool

 */

public static function reqUrl($url, $params = false, $ispost = 0)

{

    $httpInfo = array();

    $ch = curl_init();

    curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_1);

    curl_setopt($ch, CURLOPT_USERAGENT, 'Data');

    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 60);

    curl_setopt($ch, CURLOPT_TIMEOUT, 60);

    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

    if ($ispost) {

        curl_setopt($ch, CURLOPT_POST, true);

        curl_setopt($ch, CURLOPT_POSTFIELDS, $params);

        curl_setopt($ch, CURLOPT_URL, $url);

    } else {

        if ($params) {

            curl_setopt($ch, CURLOPT_URL, $url . '?' . $params);

        } else {

            curl_setopt($ch, CURLOPT_URL, $url);

        }

    }

    $response = curl_exec($ch);

    //echo $response;   //打印查看数据

    if ($response === FALSE) {

        return false;

    }

    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

    $httpInfo = array_merge($httpInfo, curl_getinfo($ch));

    curl_close($ch);

    $response = json_decode($response,true);

    $result = [];

    $result['httpCode'] = $httpCode;

    $result['info'] = $response;

    return $result;

}

}

//2.调用eg: (例子为post请求，参数为数组或者拼接字符串)

//post调用 参数为数组

public function ApiTestPost()

{

    $url = config('http_host')['interface'];   //配置外网接口

    $data = [

        'code'=>0,

        'sign'=>'1223435',  //校验签名，自己设置签名规则 外网校验

        'ordser_sn'=>'1234567'

    ];

    //$data = 'code=0&sign=12345&order_sn=1234567';   //也可以是这种格式

    $res = $this->reqUrl($url, $data,1);

    return $res['info']['data'];

}

//get调用  参数为拼接字符串

public function ApiTest()

{

    $url = config('http_host')['interface'];  //配置外网接口  $url = 'baidu.com'

    $order_sn = "987654321";

    $sign = '1234566';

    $params = "&appoint_sn=".$appoint_sn.'&sign='.$sign;

    $res = $this->reqUrl($url, $params);

    return $res['info']['data'];

}

//3.外网接口部分获取参数：

  post请求中：$data = input('');  //得到的就是上面$data数据  校验签名后写逻辑部分就ok了

　get请求中： $order_sn = input('order_sn');