Alain Roger schreef:
> Hi,
>
> i have the following classes:
> class A
> {
> public function EchoMe($txt)
> {
> echo $txt;
> }
> }
>
> class B extends A
> {
> ...
> }
>
> in theory i can write something like that:
>
> $b = new B();
> $b->EchoMe("test");
>
> and i should get echo "t
Using extends means that a class IS-A substructure of its parent class(es).
EXAMPLE:
class plant { };
class tree extends plant { };
class apple_tree extends tree { };
apple_tree inherits all methods and attributes from plant and tree
So if there was a methods plant->growth() you can also call it
bruce wrote:
hi...
haven't used php classes.. so this might not pertain.. but do php classes
have the concept of public/private functions?
Not in PHP 4
are the parent functions that
you're trying to access public/private?
-Original Message-
From: blackwater dev [mailto:[EMAIL PROTE
hi...
haven't used php classes.. so this might not pertain.. but do php classes
have the concept of public/private functions? are the parent functions that
you're trying to access public/private?
-Original Message-
From: blackwater dev [mailto:[EMAIL PROTECTED]
Sent: Tuesday, December 1
At 13:05 01.12.2002, Bernard Chamberland said:
[snip]
>Hi,
[snip]
[...omitting long code post...]
Bernard,
couple of things:
a) Class "Ressource" uses instance data ("$this->") in the constructor. You
shouldn't call
Hi,
Sunday, December 1, 2002, 10:05:53 PM, you wrote:
BC> Hi,
BC> I would like to post the following question related to an inheritance
BC> problem with PHP OO programming :
BC> With an object of a subclass, I call a method of the parentclass in order
BC> to modify an attribute of the parentc
If you need to use variables that are stored in the object, then use
$this->jk();
If you're calling bar::do_something(); then $this wont be set, so you'll
need to use foo::jk() instead.
If you're calling jk() from an object, and you don't need to use any object
attributes, then either way would
very
different to what I know and does (is) causing confusion.
Debbie
- Original Message -
From: "Debbie Dyer" <[EMAIL PROTECTED]>
To: "Rasmus Lerdorf" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Wednesday, October 02, 2002 11:41 PM
Subject: Re:
have
to know on what class they were called. anyway thanks again
/nick
- Original Message -
From: "Rasmus Lerdorf" <[EMAIL PROTECTED]>
To: "Nick Eby" <[EMAIL PROTECTED]>
Cc: "Debbie Dyer" <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent:
"Debbie Dyer" <[EMAIL PROTECTED]>;
<[EMAIL PROTECTED]>
Sent: Wednesday, October 02, 2002 11:28 PM
Subject: Re: [PHP] Inheritance and a class function: on what class was it
called?
> Since static method calls are completely disconnected from any class
> instance aski
aticFunc() { echo get_class($this); }
> }
>
> Class B extends A {}
>
> B::staticFunc();
>
> thanks again
> /nick
>
> - Original Message -
> From: "Rasmus Lerdorf" <[EMAIL PROTECTED]>
> To: "Debbie Dyer" <[EMAIL PROTECTED]>
PROTECTED]>
Sent: Wednesday, October 02, 2002 3:08 PM
Subject: Re: [PHP] Inheritance and a class function: on what class was it
called?
> > The mistake is mine not yours. I know about the :: operator I use it all
the
> > time (but within classes parent::function() etc) - but I neve
> The mistake is mine not yours. I know about the :: operator I use it all the
> time (but within classes parent::function() etc) - but I never realised
> until now that PHP will let you use any class before instantiation (and
> nearly all my PHP work uses classes). I have never even attempted to
bbie
- Original Message -
From: "Nick Eby" <[EMAIL PROTECTED]>
To: "Debbie Dyer" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Wednesday, October 02, 2002 7:53 PM
Subject: Re: [PHP] Inheritance and a class function: on what class was it
called?
esult.
sorry this is so confusing, I probably should've used the term "static" from
the beginning.
/nick
- Original Message -
From: "Debbie Dyer" <[EMAIL PROTECTED]>
To: "Nick Eby" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Wedn
nt: Wednesday, October 02, 2002 7:24 PM
Subject: Re: [PHP] Inheritance and a class function: on what class was it
called?
> not quite... the case I'm interested in is this, given your example:
>
> print C::foo();
>
> which would print nothing, unfortunately, since when the function
not quite... the case I'm interested in is this, given your example:
print C::foo();
which would print nothing, unfortunately, since when the function is called
using the :: operator there is no $this variable. basically what I'm
looking for is a replacement for get_class($this) when the functi
I think I know what you mean. You could get it to return the name of the
class.
eg.
class A {
function foo () {
return get_class($this);
}
}
class B extends A {
}
class C extends A {
}
$a = new A();
$b = new B();
$c = new C();
print $a->foo();
print $b->foo();
print $c
ðÒÉ×ÅÔ!
> if you have multilayered inheritance you may explicitely say which
> anceStor class you are calling, like foo::print().
two typos in a few words are definitely too much, sorry :)
BTW, although almost all class specification is dynamic you cannot
dynamically specify a class name in f
ðÒÉ×ÅÔ!
Jason White wrote:
> I have a class Foo{} which has a method Print().
> I have another class FooBar{} which extends Foo{} and has its own method
> Print().
>
> How do I invoke Foo{}'s Print() method from within FooBar{} once its been
> overridden?
parent::print();
if you have multilaye
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