Front Controller

App.class.php

<?php
//App class

class App {
//Holds Singleton instance
public static $instance;

//environment vars
public static $vars = array();

private function __construct() {}

//Create Singleton 
public static function get_instance() {
	if(empty(self::$instance)) {
		self::$instance = new App();
	}
	return self::$instance;
}

public function __toString() {
  return implode(", ", self::$vars);
}

//SET URI ARGUMENT
public static function set_vars(array $v) {
	self::$vars = $v;
}

//RETRIEVE URI ARGUMENT
public static function get_vars() {
	return self::$vars;
}

//CALLS LOADER CLASS
public static function load() {
	require_once('Load.php');
	return new Load();
}

}//End Class App
?>

index.php

<?php
//index.php

if(!ob_start("ob_gzhandler")) ob_start();
@!$_SESSION || @empty($_SESSION) ? session_start() : NULL;

//Require App
require_once('App.php');
/*
*ARRAY $uri
*converts the current uri into an array
*truncating the domain name. The uri elements are then used to identify/call
*system components 
*/
$protocol = $_SERVER['HTTPS'] ? "https://" : "http://";
$app_path = $protocol . $_SERVER['HTTP_HOST'] . "/" . basename(__FILE__);

$uri = $_SERVER['REQUEST_URI'];
$uri = str_replace($app_path, "", $uri);
$uri = str_replace("?" . $_SERVER["QUERY_STRING"], "", $uri);
$uri = preg_split('[\\/]', $uri, -1, PREG_SPLIT_NO_EMPTY);

//define constant VALID_APP to prevent direct script access.
define("VALID_APP", TRUE);

//sends URI array to App for initialization/instantiation
App::set_vars($uri_array);

ob_end_flush();
?>