[SOLVED] Best way to use classes?

[Boo-urns]

I'm very new to classes and OOP. My question is what is the best way to setup say an updateDBclass. I thought for the certain page you have that specific class say class User. Is there a way without hardcoding it to pass that class name to the updateDBclass. Can you pass a variable for what class you're extending?

 

<?php
class B extends $toUpdateClass {

   function update($table, $string) {
           // update db
   }
}
?>

 

I'm not sure what is best practice here so any help is very appreciated.

-Corey

[premiso]

Have you tried it?

 

I am not sure, but I would say no. The best way to find out is just try it and see what happens. If it does work, sure why not. But why would you need to dynamically define what a class extends?

[RussellReal]

classes arn't meant to be dynamic.. they're meant to be called and do a specific task.. and I really doubt that you can extend classes dynamically..

 

the best way is to just like

 

pass the class into the class and handle it with your constructor

 

class A {

  function __construct($toInstantiate) {

    $this->B = $toHandle;

  }

}

$a = new A(new B);

 

oh, forgot to mention you could also in the class do

 

B::FunctionInB();

 

class A {

  function __construct() {

    $this->B = B::handleBthings();

  }

}

[Boo-urns]

Yea i've tried it. I was just going to extend a class to create an update database script so i don't have to rewrite it all the time, but I guess i can just write a function for that. Thanks for the guidance.