Re: Use declaration outside of namespace

On 29 October 2014 13:53, Robert Stoll <php@tutteli.ch> wrote: > > -----Ursprüngliche Nachricht----- > > Von: are.you.winning@gmail.com [mailto:are.you.winning@gmail.com] Im > Auftrag von Chris Wright > > Gesendet: Mittwoch, 29. Oktober 2014 13:38 > > An: Robert Stoll > > Cc: standards@lists.php.net > > Betreff: Re: [STANDARDS] Use declaration outside of namespace > > > > On 29 October 2014 09:12, Robert Stoll <php@tutteli.ch> wrote: > > > > > Heya, > > > > > > I always found it very ugly that it is possible to define a use > > > outside of a namespace. Consider the following: > > > > > > use foo\Bar; > > > namespace test; > > > new Bar(); //error, test\Barnot found > > > > > > I do not see why we should actually support this behaviour in the > > > specification of PHP. I do not see it as a bug in the current PHP > > > implementation but I think we should consider to remove it in PHP 7. > > > Although, it is not a bug, the use declaration is simply ignored as > > > far as I can tell, but I suppose it confuses the user. Nevertheless, > > > even if we declare it as a "feature" I think it should not be a > > > "feature" of the specification. > > > > > > Thoughts? > > > > > > > > TL;DR if you revise wording of the suggested change from "outside of a > namespace" to "before a namespace declaration", > > +1 > > > > Removing the ability "use" things outside a namespace is not acceptable > to me. I have often written quick scripts that use > > things from many namespaces but don't belong in a specific namespace, > and in those cases I usually don't declare a > > namespace (it's also worth noting that you're never "outside a > namespace", you're just in the root namespace by default). > > > > That said, placing the "use" statements before the namespace declaration > doesn't make a whole bunch of sense and > > should probably be explicitly disallowed. The fact that it works in > php-src at the moment is arguably an oversight, if you try > > to actually *do* anything before the namespace declaration you even get > an error stating that it "has to be the very first > > statement in the script" - so this case should probably be disallowed. > > > > Thanks, Chris > > > > > > > Cheers, > > > Robert > > > > > > > > To be clear on this. I am not speaking about statements "outside" of a > namespace (which is not possible as you mentioned as well). I am speaking > about "use declarations" outside of a namespace and with outside I mean > actually outside. > > As you mentioned, when one tries to do the following > > $a = 1; > namespace test; > > This will fail because $a is outside of a namespace (you will get the > error message "Namespace declaration statement has to be the very first > statement in the script") > Maybe it was not clear enough, so I am going to rewrite my example to be > clearer: > > namespace{ //default namespace > $a = 1; > } > use foo\Bar; > namespace test{ > new Bar(); > } > > I hope that clears things up. > > It does, this example does indeed place something *outside* a namespace, and I am quite surprised that PHP doesn't bork at this already. I would hope no-one would ever write code like this anyway, but I'm sure I would be disappointed. > Cheers, > Robert > >