获取ip

Posted 2021-02-21 jjxhp

获取客户真实ip

1. 方法

function get_client_ip(){
    $headers = array(‘HTTP_X_REAL_FORWARDED_FOR‘, ‘HTTP_X_FORWARDED_FOR‘, ‘HTTP_CLIENT_IP‘, ‘REMOTE_ADDR‘);
    foreach ($headers as $h){
        $ip = $_SERVER[$h];
        // 有些ip可能隐匿，即为unknown
        if ( isset($ip) && strcasecmp($ip, ‘unknown‘) ){
            break;
        }
    }
    if( $ip ){
        // 可能通过多个代理，其中第一个为真实ip地址
        list($ip) = explode(‘, ‘, $ip, 2);
    }
    /* 如果是服务器自身访问，获取服务器的ip地址(该地址可能是局域网ip)
    if (‘127.0.0.1‘ == $ip){
        $ip = $_SERVER[‘SERVER_ADDR‘];
    }
    */
    return $ip;
}

1. 方法

function getRealIp() {
    if (isset($_SERVER)) {
        if (isset($_SERVER[‘HTTP_X_FORWARDED_FOR‘])) {
            $arr = explode(‘,‘, $_SERVER[‘HTTP_X_FORWARDED_FOR‘]);
            foreach ($arr as $ip) {
                $ip = trim($ip);
                if ($ip != ‘unknown‘) {
                    $realip = $ip;
                    break;
                }
            }
        } else if (isset($_SERVER[‘HTTP_CLIENT_IP‘])) {
            $realip = $_SERVER[‘HTTP_CLIENT_IP‘];
        } else if (isset($_SERVER[‘REMOTE_ADDR‘])) {
            $realip = $_SERVER[‘REMOTE_ADDR‘];
        } else {
            $realip = ‘0.0.0.0‘;
        }
    } else if (getenv(‘HTTP_X_FORWARDED_FOR‘)) {
        $realip = getenv(‘HTTP_X_FORWARDED_FOR‘);
    } else if (getenv(‘HTTP_CLIENT_IP‘)) {
        $realip = getenv(‘HTTP_CLIENT_IP‘);
    } else {
        $realip = getenv(‘REMOTE_ADDR‘);
    }
    preg_match(‘/[\d\.]{7,15}/‘, $realip, $onlineip);
    $realip = (!empty($onlineip[0]) ? $onlineip[0] : ‘0.0.0.0‘);
    return $realip;
}