guzzle的简单应用

class Service
{
    /**
     * @param array $headers 设置请求头部信息
     * @param array $options 更多设置项
     * @return \GuzzleHttp\Client 返回请求实例化对象
     */
    private static function init ($headers = [], $options = []) {
        $client = new \GuzzleHttp\Client([
            'headers' => [
                'Content-Type' => 'application/json; charset=UTF-8',
                'Access-Control-Allow-Origin' => '*',
                'Access-Control-Allow-Headers' => 'X-Requested-With,Content-Type',
                'Accept' => 'application/json'
            ],
            'timeout' => 10
        ]);
        return $client;
    }

    /**
     * @param $url  请求地址
     * @param array $data  请求数据
     * @param array $headers 请求头信息
     * @param array $options  更多设置
     * @return string
     */
    public static function post ($url, $data = array(), $headers = [], $options = [])
    {
        $client = self::init($headers, $options);//实例化
        $response = $client->request('POST', $url, [
            'form_params' => $data,
        ]);
        if ($response->getStatusCode() !== '200') {
            return $response->getBody()->getContents();
        } else {
            return $response->getReasonPhrase();
        }
    }

    /**
     * @param $url
     * @param array $data
     * @param array $headers
     * @param array $options
     * @return string
     */
    public static function get ($url, $data = array(), $headers = [], $options = [])
    {
        $client = self::init($headers, $options);//实例化
        if ($data) {
            $param = http_build_query($data);
            if (strpos($url, '?') === false) {
                $url = $url . '?' . $param;
            } else {
                $url = $url . '&' . $param;
            }
        }
        $response = $client->request('GET', $url);
        if ($response->getStatusCode() !== '200') {
            return $response->getBody()->getContents();
        } else {
            return $response->getReasonPhrase();
        }
    }
}