PHP: object extends an object, how does constructor work?

Question

I have a class User. Then I extend User with some extra information in Profile.

My constructor for Profile looks like this:

function __construct($user_id) {
  // This function sets all of User's attributes
  $this->set_user_data($user_id); 

  // This function sets the extra attribute for Profile.
  $this->set_follow_status(); 
}

The second function uses $this->user_id, an attribute set in the first function. I get this error from the second function: Fatal error: Using $this when not in object context.

Am I forgetting something about extending objects in PHP?

Colin M · Accepted Answer · 2013-01-17 17:50:57Z

3

Is the set_follow_status method declared as static? Static methods are executed in the scope of the class, not in the scope of the object, and therefore have no access to any specific instance ($this is not set inside of the method).

answered Jan 17, 2013 at 17:50

Colin M

13.4k3 gold badges42 silver badges61 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Don P Over a year ago

Yes it is. Good catch and thanks :) Too fast for me to accept as answer so hang on a bit.

Collectives™ on Stack Overflow

PHP: object extends an object, how does constructor work?

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related