The latest PhpStorm 8 EAP brings support for PSR-0 and PSR-4 namespace roots. PhpStorm comes with a configurable convention which specifies that the project Source Root is also a root for the package and namespace. In other words: every directory created under the Source Root will be considered a separate namespace.
PSR-0, also known as the Autoloading Standard, prescribes that classes and namespaces in PHP should match the directory and file structure, and vice-versa. PSR-4 allows specifying a namespace prefix for a given directory explicitly. Having this project structure makes autoloader
