View source for Adapting a Joomla 1.5 extension to Joomla 2.5

== Plugin Files Now in Different Locations ==
Joomla 1.6+ now creates a different hierarchy structure for plugins. Files are no longer placed where they used to be, so if your other parts of your application (comp, mods, etc.) expects them to be in a certain position, it won't work. Now plugins are in an additional subdirectory. If you only load your plugins via the 1.5 API you should be fine.
* Joomla 1.5 example location 
<source lang="php">JPATH_SITE . DS . 'plugins' . DS . 'authentication' . DS . 'example.php';</source>
* Joomla 1.6 example location
<source lang="php">JPATH_SITE . '/plugins/authentication/example/example.php';</source>