Re: [PHP4BETA] calling member in parent class

----- Original Message ----- From: "Peter Kovacs" <php4-peter@knowpost.com> To: <chagenbu@wso.williams.edu> Cc: <php4beta@lists.php.net> Sent: Sunday, February 06, 2000 2:29 AM Subject: Re: [PHP4BETA] calling member in parent class Peter << Since you already have to change the name of the class that your extending, it's only a matter of a search&replace on *that file*. Example: Foo.php: class Foo { ... } Bar.php: class Bar extends Foo { ... Foo::afun() ... } Now, when Foo changes to Foop, you *have* to change "class Bar extends Foo" to "class Bar extends Foop" anyway, so what's the big deal about searching and replacing in the entire file? >> But let's see another example: We have a class root named Control, 2 subclasses, Button and Edit. The class Button have 2 subclasses, Checkbox and Radio. I have an object of class Control. And depending of the choice of the user, I want to create a Button, a Checkbox, ... <pseude code> obj: Control switch (theObjTheUserWant) button: obj= new Button checkbox: obj= new Checkbox ... If I need to have the width of my obj, I can call Control::width(). But if the width of Control is nul, and the width of a button is always 150 pixels, when I will have a checkbox, calling Control::width() is not right because I will obtain a nul width instead of the width of 150 pixels for the buttons. So, here, calling parent->width() is the right way. kktos