ecshop获取客户端操作系统

<?php
/**
 * 获得客户端的操作系统
 *
 * @access  private
 * @return  void
 */
function get_os()
{
    if (empty($_SERVER[‘HTTP_USER_AGENT‘]))
    {
        return ‘Unknown‘;
    }

    $agent = strtolower($_SERVER[‘HTTP_USER_AGENT‘]);
    $os    = ‘‘;

    if (strpos($agent, ‘win‘) !== false)
    {
        if (strpos($agent, ‘nt 5.1‘) !== false)
        {
            $os = ‘Windows XP‘;
        }
        elseif (strpos($agent, ‘nt 5.2‘) !== false)
        {
            $os = ‘Windows 2003‘;
        }
        elseif (strpos($agent, ‘nt 5.0‘) !== false)
        {
            $os = ‘Windows 2000‘;
        }
        elseif (strpos($agent, ‘nt 6.0‘) !== false)
        {
            $os = ‘Windows Vista‘;
        }
        elseif (strpos($agent, ‘nt‘) !== false)
        {
            $os = ‘Windows NT‘;
        }
        elseif (strpos($agent, ‘win 9x‘) !== false && strpos($agent, ‘4.90‘) !== false)
        {
            $os = ‘Windows ME‘;
        }
        elseif (strpos($agent, ‘98‘) !== false)
        {
            $os = ‘Windows 98‘;
        }
        elseif (strpos($agent, ‘95‘) !== false)
        {
            $os = ‘Windows 95‘;
        }
        elseif (strpos($agent, ‘32‘) !== false)
        {
            $os = ‘Windows 32‘;
        }
        elseif (strpos($agent, ‘ce‘) !== false)
        {
            $os = ‘Windows CE‘;
        }
    }
    elseif (strpos($agent, ‘linux‘) !== false)
    {
        $os = ‘Linux‘;
    }
    elseif (strpos($agent, ‘unix‘) !== false)
    {
        $os = ‘Unix‘;
    }
    elseif (strpos($agent, ‘sun‘) !== false && strpos($agent, ‘os‘) !== false)
    {
        $os = ‘SunOS‘;
    }
    elseif (strpos($agent, ‘ibm‘) !== false && strpos($agent, ‘os‘) !== false)
    {
        $os = ‘IBM OS/2‘;
    }
    elseif (strpos($agent, ‘mac‘) !== false && strpos($agent, ‘pc‘) !== false)
    {
        $os = ‘Macintosh‘;
    }
    elseif (strpos($agent, ‘powerpc‘) !== false)
    {
        $os = ‘PowerPC‘;
    }
    elseif (strpos($agent, ‘aix‘) !== false)
    {
        $os = ‘AIX‘;
    }
    elseif (strpos($agent, ‘hpux‘) !== false)
    {
        $os = ‘HPUX‘;
    }
    elseif (strpos($agent, ‘netbsd‘) !== false)
    {
        $os = ‘NetBSD‘;
    }
    elseif (strpos($agent, ‘bsd‘) !== false)
    {
        $os = ‘BSD‘;
    }
    elseif (strpos($agent, ‘osf1‘) !== false)
    {
        $os = ‘OSF1‘;
    }
    elseif (strpos($agent, ‘irix‘) !== false)
    {
        $os = ‘IRIX‘;
    }
    elseif (strpos($agent, ‘freebsd‘) !== false)
    {
        $os = ‘FreeBSD‘;
    }
    elseif (strpos($agent, ‘teleport‘) !== false)
    {
        $os = ‘teleport‘;
    }
    elseif (strpos($agent, ‘flashget‘) !== false)
    {
        $os = ‘flashget‘;
    }
    elseif (strpos($agent, ‘webzip‘) !== false)
    {
        $os = ‘webzip‘;
    }
    elseif (strpos($agent, ‘offline‘) !== false)
    {
        $os = ‘offline‘;
    }
    else
    {
        $os = ‘Unknown‘;
    }

    return $os;
}
?>