How I can get map size and seed?

How I can get map size and seed in this PHP code?

Thanks!!

*$socket = @fsockopen("udp://".$ip, $queryport , $errno, $errstr, 1);
stream_set_timeout($socket, 1);
stream_set_blocking($socket, TRUE);
fwrite($socket, "\xFF\xFF\xFF\xFF\x54Source Engine Query\x00");
$response = fread($socket, 4096);
@fclose($socket);

$packet = explode("\x00", substr($response, 6), 5);
$server = array();

$server['name'] = $packet[0];  **// Server Name**
$server['map'] = $packet[1]; **// Server Map (Procedural, Hapis, Craggy or Savas)**
$server['game'] = $packet[2]; **// Game name**
$server['description'] = $packet[3]; **// Description**
$inner = $packet[4];
$server['players'] = ord(substr($inner, 2, 1));** // Players online**
$server['playersmax'] = ord(substr($inner, 3, 1)); **// Max Players **
$server['vac'] = ord(substr($inner, 8, 1)); **// Server secure***