On 19/06/2023 20:20, David Gebler wrote:
Okay, thanks. That's really quite significant, since it changes the feature
to one which could allow changes made to interfaces to adversely impact
existing clients of an interface without those clients changing a thing.
As the RFC says, it introduces a form of multiple inheritance, and
inheritance in PHP doesn't make any such guarantee - to adapt your example:
class A {
public function foo(): void {
$this->bar();
}
}
class B extends A {
public function bar(): void {
...
}
}
The job of detecting that class A doesn't define a contract for method
bar falls to static analysers, and the same would be true for default
implementations on interfaces.
Regards,
--
Rowan Tommins
[IMSoP]
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