コンピュータ名を取得します

Question

私はコンピュータに登録されたソフトウェアを持っている会社のためのウェブサイトを構築し、PCのコンピュータ名とユーザー名を使用しています。ユーザーがそれを記入する必要がなくてもそれらの値を取得する方法は？

CodeIgniterを使用しています

Answer 1

You can't. All PHP will ever see of the user's machine is the IP address, from which you MAY be able to do a reverse lookup and get a hostname. But this hostname is not likely to be the actual machine's name. Ditto for the user's client-side username. A website has no business knowing how a user logged into their local machine.

Answer 2

If everything happens on the same local network, you could use the server machine to lookup the mac address corresponding to the IP of the visitor with something like that:

/**
 * Returns MAC-address (Ethernet 2-level in OSI model address)
 * @param string $ip Address to search MAC for. If not set, IP-address from constructor'll be used
 * @return mixed
 */
public function getMAC($ip=null)
{
    if((!$ip && !$this->sCurrentIP) || !$this->_arp_allowed())
    {
        return null;
    }
    $ip=$ip?$ip:$this->sCurrentIP;
    $rgMatches=array();
    if(PHP_OS=='WINNT')
    {
       exec("arp -a", $rgResult);
       $sMacTemplate="/[\d|A-F]{2}\-[\d|A-F]{2}\-[\d|A-F]{2}\-[\d|A-F]{2}\-[\d|A-F]{2}\-[\d|A-F]{2}/i";
       foreach($rgResult as $key=>$value)
       {
          if (strpos($value, $ip)!==FALSE)
          {
             preg_match($sMacTemplate, $value, $rgMatches);
             break;
          }
       };
    }
    else
    {
       exec("arp -a | grep $ip", $rgResult);
       if(count($rgResult))
       {
           $sMacTemplate="/[\d|A-F]{2}\:[\d|A-F]{2}\:[\d|A-F]{2}\:[\d|A-F]{2}\:[\d|A-F]{2}\:[\d|A-F]{2}/i";
           preg_match($sMacTemplate, $rgResult[0], $rgMatches);
       }
    }
    return count($rgMatches)?$rgMatches[0]:null;
}