<?php


/**
 * 发送HTTP网络请求类
 *
 * @version 3.0.0
 * @author open.qq.com
 * @copyright ? 2011, Tencent Corporation. All rights reserved.
 * @ History:
 *               3.0.0 | nemozhang | 2011-03-09 15:33:04 | initialization
 */


class SnsNetwork
{
	/**
	 * 执行一个 HTTP 请求
	 *
	 * @param string 	$url 	执行请求的URL
	 * @param mixed	$params 表单参数
	 * 							可以是array, 也可以是经过url编码之后的string
	 * @param mixed	$cookie cookie参数
	 * 							可以是array, 也可以是经过拼接的string
	 * @param string	$method 请求方法 post / get
	 * @param string	$protocol http协议类型 http / https
	 * @return array 结果数组
	 */
	static public function makeRequest($url, $params, $cookie, $method='post', $protocol='http')
	{
		$query_string = self::makeQueryString($params);
	    $cookie_string = self::makeCookieString($cookie);

	    $ch = curl_init();

	    if ('get' == $method)
	    {
		    curl_setopt($ch, CURLOPT_URL, "$url?$query_string");
	    }
	    else
        {
		    curl_setopt($ch, CURLOPT_URL, $url);
		    curl_setopt($ch, CURLOPT_POST, 1);
		    curl_setopt($ch, CURLOPT_POSTFIELDS, $query_string);
	    }

	    curl_setopt($ch, CURLOPT_HEADER, false);
	    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3);

        // disable 100-continue
        curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect:'));

	    if (!empty($cookie_string))
	    {
	    	curl_setopt($ch, CURLOPT_COOKIE, $cookie_string);
	    }

	    if ('https' == $protocol)
	    {
	    	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    		curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
	    }

	    $ret = curl_exec($ch);
	    $err = curl_error($ch);

	    if (false === $ret || !empty($err))
	    {
		    $errno = curl_errno($ch);
		    $info = curl_getinfo($ch);
		    curl_close($ch);

	        return array(
	        	'result' => false,
	        	'errno' => $errno,
	            'msg' => $err,
	        	'info' => $info,
	        );
	    }

       	curl_close($ch);

        return array(
        	'result' => true,
            'msg' => $ret,
        );

	}

	static private function makeQueryString($params)
	{
		if (is_string($params))
			return $params;

		$query_string = array();
	    foreach ($params as $key => $value)
	    {
	        array_push($query_string, rawurlencode($key) . '=' . rawurlencode($value));
	    }
	    $query_string = join('&', $query_string);
	    return $query_string;
	}

	static private function makeCookieString($params)
	{
		if (is_string($params))
			return $params;

		$cookie_string = array();
	    foreach ($params as $key => $value)
	    {
	        array_push($cookie_string, $key . '=' . $value);
	    }
	    $cookie_string = join('; ', $cookie_string);
	    return $cookie_string;
	}
}

// end of script