Factory Pattern: Example of class inheritance, using a Factory constructor for components

factory_pattern_example.php

/*
This is a snippet of code, using a Factory class constructor with modules of apps, 
it's a simple but effective architecture, the differents apps can use other patterns internally
*/

<?php
class AppComponent {
	private $myVar;
    
    public function __construct(){
		//Initialize with our variables
		$this->myVar = "";
	}
    
	public function run(){		
		$route = !empty($_GET['route']) ? $_GET['route'] : $this->getFirstComponentActive();
		
		switch($route){
			case 'web':
				ComponentFactory::getComponent("WebController")->run();
			break;
		}
	}
}

class ComponentFactory {
	private static function includeClass($className){
		if(!class_exists($className, false)){
			if(file_exists($className.".php")){
				require_once(trim($className).".php");
			}
		}
	}
	
	public static function getClass($className){
		ComponentFactory::includeClass($className);
		return new $className();	
	}
}

//Call the class to load, for example, a class from a module
ComponentFactory::getComponent("AppComponent")->run();
?>