Using variable names to instantiate a class

Question

I'm trying to do something like this:

$controller = new $controller . 'Controller';

Which would create a new instance of the PagesController class if $controller was Pages. I'm getting this error, however:

Fatal error: Class 'Pages' not found in C:\xampp\htdocs\test\application\app.php on line 25

The class is named PagesController.

I've seen this done in PHP before, but I can't find any documentation on it.

Answer 1

Do this

$controller = $controller . 'Controller';
$controller = new $controller();