[wups]

Looks alright.
My suggestion:

pawn Код:

function CreateMySQLConnection(host[], user[], db[], pass[])
{
    mysql_connect(host, user, db, pass);
    
    if (mysql_ping() >= 1)
    {
        print("INFO: Connected To MySQL!");
    }
    else
    {
        print("INFO: Can't Connect To MySQL!");
    }
mysql_query("CREATE TABLE IF NOT EXISTS `entrances` ( \
  `ID` int(3) NOT NULL, \
  `Name` varchar(25) NOT NULL, \
  `X` float NOT NULL, \
  `Y` float NOT NULL, \
  `Z` float NOT NULL, \
  `exitX` float NOT NULL, \
  `exitY` float NOT NULL, \
  `exitZ` float NOT NULL, \
  `Interior` int(5) NOT NULL, \
  `VirtualW` int(3) NOT NULL \
) ENGINE=InnoDB DEFAULT CHARSET=latin1;");
}

The plugin will be almost plug & play.
Not sure if you won't need to join strings.
I think it's the best(coded, not featured) released entrance system.
+ You should add a command /createinterior (which automaticly saves it into mysql). That way people could add different places dynamically.