Simplified implementation of real-time facades extracted from Laravel framework.
Clone this repository:
git clone https://github.com/nikazooz/real-time-facades-example
Run composer dump-autoload so the classes from src/ directory and functions from functions.php file are loaded.
Run the example with php index.php. You should see "It works!" message printed in the terminal.
As you can see, in the index.php we're importing App\Main class with Facades prefix in the namespace, and calling run() method on a class statically even though it is not a static method.
Another thing you can see in the index.php is setting "Facades\" as namespace prefix for FacadeLoader (in Laravel it is called Illuminate\Foundation\AliasLoader), and call register method on an instance of that class.
What this does is register load method from FacadeLoader as a first way to resolve unresolved classes. We check if the fully qualified class name starts with the prefix we've set. If it doesn't another loader will be used or an exception is thrown if the class is not found. If the requested class starts with the prefix, we require the facade file. If the file doesn't exist yet, we use the stub and replace the placeholder string with appropriate values and store the edited content to a cached facade file so we can require it.
It this example there is only a minimal implementation of facades that, unlike Laravel's which resolves instance from the container using facade accessor string, just creates a new instance of the class we're using as a real-time facade and calls the method we tried using statically on it.