On 19 Sep 2008, at 15:19, Johannes Müller wrote:
Why does the following code
<?php
interface I {
public function a();
}
class A implements I {
public function a() {}
}
class B extends A {
}
if (is_subclass_of('A', 'I')) echo "A implements I\n";
if (is_subclass_of('B', 'I')) echo "B implements I\n";
?>
outputs:
B implements I
I would expect the following output:
A implements I
B implements I
Because there is a big difference between extends and implements, one
of which being that the class is not considered to be a subclass of
an interface it implements. Seems entirely logical to me.
-Stut
--
http://stut.net/
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