Inflectors allow you to define the manipulation of an object of a specific type as the final step before it is returned by the container.
This is useful for example when you want to invoke a method on all objects that implement a specific interface.
Imagine that you have a
LoggerAwareInterface and would like to invoke the method called
setLogger passing in a logger every time a class is retrieved that implements this interface.
$container->register('Some\Logger'); $container->register('Some\LoggerAwareClass'); // implements LoggerAwareInterface $container->register('Some\Other\LoggerAwareClass'); // implements LoggerAwareInterface $container->inflector('LoggerAwareInterface') ->invokeMethod('setLogger', ['Some\Logger']); // Some\Logger will be resolved via the container
Now instead of adding a method call to each class individually we can simply define an inflector to invoke the method for every class of that type.