discussion on http://stackoverflow.com/questions/18424623/problems-with-php-code-or-a-bug

DaGhostman-Dimitrov.php

<?php

/*
You don't need ReflectionClass at all - just make an interface for your classes to follow.
Define all the methods that you require of your classes for this situation.
*/

interface iA{
    // (modified init signature to include args you pass in your example)
    public function init( $request,$response );
    public function preDispatch();
    public function indexAction();
    public function postDispatch();
}

/*
Then, make your classes use the interface:
*/

class A implements iA{
    public function init( $request,$response ){
        print "init called... ";
    }
    public function preDispatch(){
        print "pre-dispatch called... ";
    }
    public function indexAction(){
        print "Hello, World! ";
    }
    public function postDispatch(){
        print "post-dispatch.";
}

/*
Now, you don't have to worry about it - 
a single line of code will tell whether or not all of the required methods are present:
*/
$class = new A;
if( $class instanceof iA ){   //<-- wasn't that easy!?
    $class->init( $request,$response );
    $class->preDispatch();
    $class->indexAction();
    $class->postDispatch():
}
else{
    print "Supplied class does not have any manners and does not greet you :D";
}

/*
as an aside;
While single-line conditions do not *require* blocks, I **highly recommend** you use them.
blockless code is harder to read, and easier to break.
*/