256   }

   257   

   258   /**

   259    * Returns WHOIS information about a nick.

   260    * @param string Nick

   261    * @return array

   262    */

   263   

   264   public function whois($nick)

   265   {

   266     static $cache = array();

   267     if ( isset($cache[$nick]) )

   268     {

   269       if ( $cache[$nick]['time'] + 20 >= time() )

   270       {

   271         return $cache[$nick];

   272       }

   273     }

   274     $this->put("WHOIS $nick\r\n");

   275     $lines = array();

   276     $return = array(

   277         'identified' => false,

   278         'time' => time()

   279       );

   280     while ( $line = $this->get(3) )

   281     {

   282       $lines[] = $line;

   283       list(, $code) = explode(' ', $line);

   284       $code = intval($code);

   285       switch($code)

   286       {

   287         case 401:

   288           return false;

   289         case 311:

   290           list(, , , $return['nick'], $return['user'], $return['host']) = explode(' ', $line);

   291           $return['ircname'] = substr($line, strpos(substr($line, 1), ':') + 2);

   292           break;

   293         case 319:

   294           $return['channels'] = explode(' ', substr($line, strpos(substr($line, 1), ':') + 2));

   295           break;

   296         case 307:

   297         case 320:

   298           if ( strstr($line, 'identified') )

   299             $return['identified'] = true;

   300           break;

   301         case 318:

   302           $cache[$nick] = $return;

   303           return $return;

   304       }

   305     }

   306     $cache[$nick] = $return;

   307     return $return;