转：封装好的CURL和Fsockopen函数，分享

PHP代码

//CURL
/**
* 使用：
* echo cevin_http_open('http://www.baidu.com');
*
* POST数据
* $post = array('aa'=>'ddd','ee'=>'d')
* 或
* $post = 'aa=ddd&ee=d';
* echo cevin_http_open('http://www.baidu.com',array('post'=>$post));
*/
function cevin_http_open($url, $conf = array())
{
    if(!function_exists('curl_init') or !is_array($conf))  return FALSE;

    $post = '';
    $purl = parse_url($url);

    $arr = array(
        'post' => FALSE,
        'return' => TRUE,
        'cookie' => 'C:/cookie.txt',);
    $arr = array_merge($arr, $conf);
    $ch = curl_init();

    if($purl['scheme'] == 'https')
    {
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 1);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    }

    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, $arr['return']);
    curl_setopt($ch, CURLOPT_COOKIEJAR, $arr['cookie']);
    curl_setopt($ch, CURLOPT_COOKIEFILE, $arr['cookie']);

    if($arr['post'] != FALSE)
    {
        curl_setopt($ch, CURL_POST, TRUE);
        if(is_array($arr['post']))
        {
            $post = http_build_query($arr['post']);
        } else {
            $post = $arr['post'];
        }
        curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
    }

    $result = curl_exec($ch);
    curl_close($ch);

    return $result;
}

PHP代码

//Fsockopen
/**
*使用方法同CURL
*/
function sw_http_open($url, $conf = array()) {
    $return = '';
    if(!is_array($conf))
    {
        return $return;
    }
    $matches = parse_url($url);
    !isset($matches['host']) && $matches['host'] = '';
    !isset($matches['path']) && $matches['path'] = '';
    !isset($matches['query']) && $matches['query'] = '';
    !isset($matches['port']) && $matches['port'] = '';
    $host = $matches['host'];
    $path = $matches['path'] ? $matches['path'].($matches['query'] ? '?'.$matches['query'] : '') : '/';
    $port = !emptyempty($matches['port']) ? $matches['port'] : 80;

    $conf_arr = array(
        'limit'=>0,
        'post'=>'',
        'cookie'=>'',
        'bysocket'=>FALSE,
        'ip'=>'',
        'timeout'=>15,
        'block'=>TRUE,
        );

    foreach (array_merge($conf_arr, $conf) as $k=>$v) ${$k} = $v;

    if($post) {
        if(is_array($post))
        {
            $post = http_build_query($post);
        }
        $out = "POST $path HTTP/1.0\r\n";
        $out .= "Accept: */*\r\n";
        //$out .= "Referer: $boardurl\r\n";
        $out .= "Accept-Language: zh-cn\r\n";
        $out .= "Content-Type: application/x-www-form-urlencoded\r\n";
        $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
        $out .= "Host: $host\r\n";
        $out .= 'Content-Length: '.strlen($post)."\r\n";
        $out .= "Connection: Close\r\n";
        $out .= "Cache-Control: no-cache\r\n";
        $out .= "Cookie: $cookie\r\n\r\n";
        $out .= $post;
    } else {
        $out = "GET $path HTTP/1.0\r\n";
        $out .= "Accept: */*\r\n";
        //$out .= "Referer: $boardurl\r\n";
        $out .= "Accept-Language: zh-cn\r\n";
        $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";
        $out .= "Host: $host\r\n";
        $out .= "Connection: Close\r\n";
        $out .= "Cookie: $cookie\r\n\r\n";
    }
    $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);
    if(!$fp) {
        return '';
    } else {
        stream_set_blocking($fp, $block);
        stream_set_timeout($fp, $timeout);
        @fwrite($fp, $out);
        $status = stream_get_meta_data($fp);
        if(!$status['timed_out']) {
            while (!feof($fp)) {
                if(($header = @fgets($fp)) && ($header == "\r\n" ||  $header == "\n")) {
                    break;
                }
            }

            $stop = false;
            while(!feof($fp) && !$stop) {
                $data = fread($fp, ($limit == 0 || $limit > 8192 ? 8192 : $limit));
                $return .= $data;
                if($limit) {
                    $limit -= strlen($data);
                    $stop = $limit <= 0;
                }
            }
        }
        @fclose($fp);
        return $return;
    }
}

转自：http://blog.icain.cn/show-219-1.html