axel wrote:
Hello,
following code won't work in the expected way:
class ClassA {
function getClassName() {
return get_class($this); # [1]
}
}
class ClassB extends ClassA { }
echo ClassB::getClassName();
this script echoes "Object" instead of "ClassB". but i would like to
either you tested some different code to what you posted above OR
(your build of?) 5.0.3 is borked.
I tested this on 5.0.2 and 5.0.4 and both did exactly what I expected, namely
output nothing - $this is not defined when you call ClassB::getClassName()
(because you make a static call) so nothing is the only logical output.
return the classname of the derived class without writing the method again.
this will work:
??? it's not even valid php.
B = new ClassB();
echo ClassB->getClassName();
maybe you mean:
class ClassA {function getClassName() { return get_class($this); }}
class ClassB extends ClassA {}
$B = new ClassB();
echo $B->getClassName();
which _does_ work but is fairly pointless because you
already know the classname in order to be able to create the object
in the first place.
i tried to use line [2] instead of [1]
return get_class(self); # [2]
but this only returns an empty string.
again this is what I expect to happen.
is there any solution for my problem?
I don't really see what the problem is, can you give some
more real world detail on what you are trying/want to do?
otherwise (re-)read this chapter:
http://php.belnet.be/manual/en/language.oop5.php
... if you're _really_ into generic code then the reflection API
is maybe you should look into. I have used reflection no and again,
very useful stuff although to be honest I don't really grasp the
concept/reasoning behind reflection properly (which means I have probably
been 'misusing' it :-)
rgds
i'm using PHP Version 5.0.3 (with Apache 1, Windows XP)
greetings
axel
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