php通过$_SERVER['HTTP_USER_AGENT']获取浏览器相关参数

//获取浏览器

function getBrowse()

{

    global $_SERVER;

    $Agent = $_SERVER['HTTP_USER_AGENT'];

    $browseinfo='';

    if(ereg('Mozilla', $Agent) && !ereg('MSIE', $Agent)){

        $browseinfo = 'Netscape Navigator';

    }

    if(ereg('Opera', $Agent)) {

        $browseinfo = 'Opera';

    }

    if(ereg('Mozilla', $Agent) && ereg('MSIE', $Agent)){

        $browseinfo = 'Internet Explorer';

    }

    if(ereg('Chrome', $Agent)){

        $browseinfo="Chrome";

    }

    if(ereg('Safari', $Agent)){

        $browseinfo="Safari";

    }

    if(ereg('Firefox', $Agent)){

        $browseinfo="Firefox";

    }

    return $browseinfo;

}

//获取ip

function getIP ()

{

    global $_SERVER;

    if (getenv('HTTP_CLIENT_IP')) {

        $ip = getenv('HTTP_CLIENT_IP');

    } else if (getenv('HTTP_X_FORWARDED_FOR')) {

        $ip = getenv('HTTP_X_FORWARDED_FOR');

    } else if (getenv('REMOTE_ADDR')) {

       
4000
$ip = getenv('REMOTE_ADDR');

    } else {

        $ip = $_SERVER['REMOTE_ADDR'];

    }

    return $ip;

}

//获取用户系统

function getOS ()

{

    global $_SERVER;

    $agent = $_SERVER['HTTP_USER_AGENT'];

    $os = false;

    if (eregi('win', $agent) && strpos($agent, '95')){

        $os = 'Windows 95';

    }elseif (eregi('win 9x', $agent) && strpos($agent, '4.90')){

        $os = 'Windows ME';

    }elseif (eregi('win', $agent) && ereg('98', $agent)){

        $os = 'Windows 98';

    }elseif (eregi('win', $agent) && eregi('nt 5.1', $agent)){

        $os = 'Windows XP';

    }elseif (eregi('win', $agent) && eregi('nt 5.2', $agent)){    

        $os = 'Windows 2003';

    }elseif (eregi('win', $agent) && eregi('nt 5', $agent)){

        $os = 'Windows 2000';

    }elseif (eregi('win', $agent) && eregi('nt', $agent)){

        $os = 'Windows NT';

    }elseif (eregi('win', $agent) && ereg('32', $agent)){

        $os = 'Windows 32';

    }elseif (eregi('linux', $agent)){

        $os = 'Linux';

    }elseif (eregi('unix', $agent)){

        $os = 'Unix';

    }elseif (eregi('sun', $agent) && eregi('os', $agent)){

        $os = 'SunOS';

    }elseif (eregi('ibm', $agent) && eregi('os', $agent)){

        $os = 'IBM OS/2';

    }elseif (eregi('Mac', $agent) && eregi('PC', $agent)){

        $os = 'Macintosh';

    }elseif (eregi('PowerPC', $agent)){

        $os = 'PowerPC';

    }elseif (eregi('AIX', $agent)){

        $os = 'AIX';

    }elseif (eregi('HPUX', $agent)){

        $os = 'HPUX';

    }elseif (eregi('NetBSD', $agent)){

        $os = 'NetBSD';

    }elseif (eregi('BSD', $agent)){

        $os = 'BSD';

    }elseif (ereg('OSF1', $agent)){

        $os = 'OSF1';

    }elseif (ereg('IRIX', $agent)){

        $os = 'IRIX';

    }elseif (eregi('FreeBSD', $agent)){

        $os = 'FreeBSD';

    }elseif (eregi('teleport', $agent)){

        $os = 'teleport';

    }elseif (eregi('flashget', $agent)){

        $os = 'flashget';

    }elseif (eregi('webzip', $agent)){

        $os = 'webzip';

    }elseif (eregi('offline', $agent)){

        $os = 'offline';

    }else{

        $os = 'Unknown';

    }

    return $os;

}