curl使用代理ip

 $proxy = file_get_contents('api接口'); // 获取代理ip

private function curl($url, $params = false, $isPost = 1, $https = 0, $proxy)
{
        sleep(1);   // 请求延迟
        $httpInfo = array();
        $ch = curl_init();
        curl_setopt ($ch, CURLOPT_PROXY, $proxy);  // 使用代理ip
        curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
        curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36');
        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
        curl_setopt($ch, CURLOPT_TIMEOUT, 30);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);   // 防止重定向
        curl_setopt($ch, CURLOPT_AUTOREFERER, 1);
        if ($https) {
            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE); // 对认证证书来源的检查
            curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); // 从证书中检查SSL加密算法是否存在
        }
        $data = $params;
        if ($isPost) {
            curl_setopt($ch, CURLOPT_POST, true);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
            curl_setopt($ch, CURLOPT_URL, $url);
        } else {
            if ($params) {
                if (is_array($data)) {
                    $data = http_build_query($data);
                }
                curl_setopt($ch, CURLOPT_URL, $url . '?' . $data);
            } else {
                curl_setopt($ch, CURLOPT_URL, $url);
            }
        }
        $response = curl_exec($ch);

        $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
        $httpInfo = array_merge($httpInfo, curl_getinfo($ch));
        curl_close($ch);
        // 判断curl是否成功
        if (empty($response)) {
            return false;
        }
        return $response;
}