php获取访问者ip

来源：互联网发布：网络协议组成部分为编辑：程序博客网时间：2024/06/05 19:14

方法一：$_SERVER['HTTP_X_FORWARDED_FOR']来获取相应的地址

/**     * 获取访问者IP     *     */    public static function get_client_ip() {        if (getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {            $CLIENT_IP = getenv('HTTP_CLIENT_IP');        } elseif (getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {            $CLIENT_IP = getenv('HTTP_X_FORWARDED_FOR');        } elseif (getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {            $CLIENT_IP = getenv('REMOTE_ADDR');        } elseif (isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {            $CLIENT_IP = $_SERVER['REMOTE_ADDR'];        }        return $CLIENT_IP;    }

方法二：利用curl依靠第三方来获取，如http://www.ip138.com/ip2city.asp

function get_onlineip() {    $ch = curl_init('http://www.ip138.com/ip2city.asp');    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);    $a  = curl_exec($ch);    preg_match('/\[(.*)\]/', $a, $ip);    return $ip[1]; }

http://blogread.cn/it/article/3855?f=wb