class owner

[Lynky]

Hi,

is it possible to find out, who is the owner of a PHP class?
e.g.:

class c1 {
  function c1() {
    $c = new c2();
    }
  }


class c2 {
  function c2() {
    ...
    echo get_class($owner);
    }
  }

the echo statement should print out the class name of the owner (c1). I know there is a way to pass a reference within the constructor of c2, but that's not very nice :bemused: Is there another way?

Thanks,
Lynky

[Shrike]

I'm not really sure why you'd want to find that out. The class has no concept of it's containing variable, but the containing variable knows what type it's object is.

[Drakla]

Within the class you can do

echo get_class($this);

if you want to find out what type it is.

[Lynky]

Hi,
thanks for your answers.
I want to find that out, so that I can check if the class is owned by a specific object, so that I can use its variables and functions as well. That saves me from declaring the same functions and members twice. I don't want want to inherit the class, for it makes no sense in my context:

class calendar {
  var $now = getdate();

  function calendar () {
    for (...) {
      $d = new day();
      ...
      }
    }
  }


class day{

  function day() {
    ...
    echo $owner->now;
    }
  }  

It just makes no logical sense to inherit a calendar from a day. Maybe the best thing is really to pass the reference into the constructor of day.

It is possible in other programming languages (such as Delphi) to get the owner and so climb up the hierarchy. I thought maybe there is a php function that does the same :bemused:

Lynky

[Drakla]

Might be worth you looking at 'parent' here
http://uk2.php.net/manual/en/keyword.parent.php

And [man]method_exists[/man] might come in useful, as might [man]is_subclass_of[/man]