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5 changes: 4 additions & 1 deletion components/class_loader/introduction.rst
Original file line number Diff line number Diff line change
Expand Up @@ -12,11 +12,14 @@ Usage

Whenever you reference a class that has not been required or included yet,
PHP uses the `autoloading mechanism`_ to delegate the loading of a file defining
the class. Symfony2 provides two autoloaders, which are able to load your classes:
the class. Symfony2 provides three autoloaders, which are able to load your classes:

* :doc:`/components/class_loader/class_loader`: loads classes that follow
the `PSR-0` class naming standard;

* :doc:`/components/class_loader/psr4_class_loader`: loads classes that follow
the `PSR-4` class naming standard;

* :doc:`/components/class_loader/map_class_loader`: loads classes using
a static map from class name to file path.

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