Question

This is the basic class design

class CustomModule {

    public __construct() {  }

    //Run me first automaticly  
    public function exec($str) {  } 

}

class Randomizer extends CustomModule {

    public __construct() {  }

    //Call me
    public function exec($str) {  } 

}

As I am designing a plugin/module system for extern developers I need the CustomModule->exec() to run first, I do not want to leave it up to the devs to have to call base->exec($str).

I want CustomModule::exec() called automaticly before Randomizer::exec() is called without having to put code in Randomizer::exec(). Is This Possible perhaps with magic function?

Answer 1

If your object requires some initialization before you can “release* it into the rest of application, then it means that you need a factory for this. This is how you should be solving it, if you require to call some method only once.

If such execution happens each time you call exec() method, then instead you should be using some sort of containment (in a form of decorator or just you standard composition of objects).

Basically, you need to restructure your code.