/**
* Returns an instance of the Simplicity class or supplied string name
* that must extend the main Simplicity class.
*
* @param string $class Optional string name of subclass to instanciate
* @param array $opts Optional array options.
* @return Simplicity
*/
public static final function getInstance($class = 'Simplicity', $opts = array())
{
if (!is_object(self::$_instance)) {
if (!class_exists($class)) {
throw new Exception("Class '{$class}' does not exist.");
}
self::$_instance = new $class($opts);
if (!self::$_instance instanceof Simplicity) {
throw new Exception("Class '{$class}' does not extend the root class Simplicity.");
}
}
return self::$_instance;
}
<?php
require '../simplicity/simplicity.php';
$s = Simplicity::getInstance()->start('dev');