PHP 4's version of Java "implements"

[ppowell]

class PagOptionsView extends PaginationView {

 var $dbAP;

 function PagOptionsView($id) {
  if (!is_object($this->dbAP)) $this->dbAP =& new DBActionPerformer($id);
 }

}

Honestly that is the very closest I can get in PHP to the Java construct:

public class PagOptionsView extends PaginationView implements DBActionPerformer {}

Goal is that I want to have a PagOptionsView class instance that contains a property $dbAP that is a DBActionPerformer object..

Problem is that I'd like to call it statically as well:

PagOptionsView::getDBAP()

Which fails because PagOptionsView has to be instantiated in order for this to happen sice $this->dbAP is constructed in the constructor.

I'm just plain confused and I don't want to have to instantiate objects all over the place to get just one value, I want the elegance of the Java "implements" feature of implementing abstract classes into an existent PHP class but I don't know how.

Could someone help me out here?
Thanx
Phil

[planetsim]

In PHP 5 you can have abstract classes. In PHP 4 i dont think its possible to set a class out like that though.

[Weedpacket]

PHP4 doesn't have "implements" because PHP4 doesn't have a separate concept of "interface" (or abstract functions, for that matter).