public static function get_base()
 {
     $mp_version = self::get_version();
     // Strip out any beta or RC components from version... get base version
     $mp_version = preg_replace('/\\.\\D.*/', '', $mp_version);
     self::$mp_base = version_compare($mp_version, '3.0') > -1 ? '3.0' : '2.0';
     return self::$mp_base;
 }