Dynamic method call in OOP - php

Question

I don't have alot of experience with OOP programming in PHP, and my search has given no result but solutions to direct methods. What I need is this:
// URL Decides which controller method to load
$page = $_GET['page'];
// I want to load the correct controller method here
$this->$page();
// A method
public function home(){}
// Another method
public function about(){}
// e.g. ?page=home would call the home() method
EDIT: I've tried several of the suggestions, but what I get is a memory overload error message. Here is my full code:
<?php
class Controller {
// Defines variables
public $load;
public $model;
public function __construct() {
// Instantiates necessary classes
$this->load = new Load();
$this->model = new Model();
if (isset($_GET['page'])) {
$page = $_GET['page'];
$fc = new FrontController; // This is what crashes apparently, tried with and without ();
}
}
}

Answer 1

If I understand your question correctly, you'd probably want something more like this:
class FrontController {
public function home(){ /* ... */ }
public function about(){ /* ... */ }
}
$page = $_GET['page'];
$fc = new FrontController;
if( method_exists( $fc, $page ) ) {
$fc->$page();
} else {
/* method doesn't exist, handle your error */
}
Is this what you're looking for? The page will look at the incoming $_GET['page'] variable, and check to see whether your FrontController class has a method named $_GET['page']. If so, it will be called; otherwise, you'll need to do something else about the error.

Answer 2

You can call dynamic properties and methods using something like this:
$this->{$page}();

Answer 3

Use a class.
Class URLMethods {
public function home(){ ... }
public function about(){ ... }
}
$requestedPage = $_GET['page'];
$foo = new URLMethods();
$foo->$requestedPage();

Answer 4

You can achieve this by using call_user_func. See also How do I dynamically invoke a class method in PHP?
I think you'd like also to append another string to the callable functions like this:
public function homeAction(){}
in order to prevent a hacker to call methods that you probably don't want to be.