/**
* "Start" the application:
* Analyze the URL elements and calls the according controller/method or the fallback
*/
public function __construct()
{
// create array with URL parts in $url
$this->splitUrl();
// check for controller: does such a controller exist ?
if (file_exists('./application/controller/' . $this->url_controller . '.php')) {
// if so, then load this file and create this controller
// example: if controller would be "car", then this line would translate into: $this->car = new car();
require './application/controller/' . $this->url_controller . '.php';
$this->url_controller = new $this->url_controller();
// check for method: does such a method exist in the controller ?
if (method_exists($this->url_controller, $this->url_action)) {
// call the method and pass the arguments to it
if (isset($this->url_parameter_3)) {
// will translate to something like $this->home->method($param_1, $param_2, $param_3);
$this->url_controller->{$this->url_action}($this->url_parameter_1, $this->url_parameter_2, $this->url_parameter_3);
} elseif (isset($this->url_parameter_2)) {
// will translate to something like $this->home->method($param_1, $param_2);
$this->url_controller->{$this->url_action}($this->url_parameter_1, $this->url_parameter_2);
} elseif (isset($this->url_parameter_1)) {
// will translate to something like $this->home->method($param_1);
$this->url_controller->{$this->url_action}($this->url_parameter_1);
} else {
// if no parameters given, just call the method without parameters, like $this->home->method();
$this->url_controller->{$this->url_action}();
}
} else {
// default/fallback: call the index() method of a selected controller
$this->url_controller->index();
}
} else {
// invalid URL, so simply show start/index
require './application/controller/start.php';
$start = new Start();
$start->index();
}
}