file_exists($env->app_file("data/impl/xml/mw_xml_data.php"))
&& file_exists($env->app_file("data/impl/xml/mw_xml_data_handler.php"))
){
- require $env->app_file("data/impl/xml/mw_xml_data.php");
- require $env->app_file("data/impl/xml/mw_xml_data_handler.php");
+ if(!class_exists("mw_xml_data")) require_once $env->app_file("data/impl/xml/mw_xml_data.php");
+ if(!class_exists("mw_xml_data_handler")) require_once $env->app_file("data/impl/xml/mw_xml_data_handler.php");
if(
class_exists("mw_xml_data")
&& class_exists("mw_xml_data_handler")