Php http/sock5:

// 要访问的目标页面
        $targetUrl = "http://baidu.com";

        // 代理服务器
        $proxyServer = "http":"http://ip:port";

        // 隧道身份信息
        $ch = curl_init();

        curl_setopt($ch, CURLOPT_URL, $targetUrl);

        curl_setopt($ch, CURLOPT_HTTPPROXYTUNNEL, false);

        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

        // 设置代理服务器
//        curl_setopt($ch, CURLOPT_PROXYTYPE, 0); //http

        curl_setopt($ch, CURLOPT_PROXYTYPE, 5); //sock5

        curl_setopt($ch, CURLOPT_PROXY, $proxyServer);

        // 设置隧道验证信息
        curl_setopt($ch, CURLOPT_PROXYAUTH, CURLAUTH_BASIC);

        curl_setopt($ch, CURLOPT_USERAGENT, "Mozilla/4.0 (compatible; MSIE 6.0; 

        Windows NT 5.1; SV1; .NET CLR 2.0.50727;)");

        curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3);

        curl_setopt($ch, CURLOPT_TIMEOUT, 5);

        curl_setopt($ch, CURLOPT_HEADER, true);

        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

        $result = curl_exec($ch);

        curl_close($ch);

        var_dump($result);