se/SE/se-lib/RouteBase.php

<?php

class RouteBase {

	public function route() {
		$task = V::get('_task', '', $_REQUEST);
		if (empty($task)) {
			$this->defaultAction();
			return;
		}

		$methodName = "{$task}Action";
		if (method_exists($this, $methodName)) {
			$this->{$methodName}();
		} else {
			die("Task '{$task}' not exists");
		}
	}

	public function defaultAction() {
		die("default task not implemented");
	}

}