Description
int mysql_select_db (string database_name [, int 
       link_identifier])
 
     Returns: true on success, false on error.
    
 
     mysql_select_db() sets the current active
     database on the server that's associated with the specified link
     identifier.  If no link identifier is specified, the last opened
     link is assumed.  If no link is open, the function will try to
     establish a link as if mysql_connect() was
     called, and use it.
    
     Every subsequent call to mysql_query() will be
     made on the active database.
    
 See also:
     mysql_connect(), 
     mysql_pconnect(), and
     mysql_query().
    
     For downward compatibility mysql_selectdb()
     can also be used.