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Date: Mon, 27 Jun 2016 16:44:32 +0100
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Subject: Re: [PHP-DEV] Possible Bug with Interface, Constants and Inheritance
From: rowan.collins@gmail.com (Rowan Collins)

On 27/06/2016 16:31, Andreas Heigl wrote:
> So it crashes with a fatal error when Implementing the interface. It'S
> interesting though that the script allows me to instantiate the class
> nonetheless.

It sounds to me like the ability of the interactive shell to catch fatal 
errors and continue allows you to execute code with the engine in a 
bogus state.

It's possible to do all sorts of wacky things that way:

php > class Bogus implements NonExistent {}
PHP Fatal error:  Interface 'NonExistent' not found in php shell code on 
line 1

Fatal error: Interface 'NonExistent' not found in php shell code on line 1
php > $b = new Bogus;
php > var_dump($b);
object(Bogus)#1 (0) {
}
php > var_dump($b instanceOf NonExistent);
bool(false)
php > var_dump($b instanceOf Bogus);
bool(true)



> PHP Fatal error:  Cannot inherit previously-inherited or override
> constant C1 from interface I1 in

Can I just say this is a positively hideous error message. I can't 
actually figure out how to parse its grammar: is it (inherit 
previously-inherited) OR (override)? If so, what does "inherit 
previously-inherited" mean?