D7034: Add callable type to PHP

[Matthijs Tijink]

mtijink added inline comments.

INLINE COMMENTS

> zhigalin wrote in duchain.cpp:751
> For `return $i();` the return type should be mixed, not callable

Both return statements return a callable: `$i` (note: without `()`) is a callable, and `function () {}` is a callable too. So I think this behaviour is correct, but correct me if I'm wrong.

REPOSITORY
  R52 KDevelop: PHP Support

REVISION DETAIL
  https://phabricator.kde.org/D7034

To: mtijink, #kdevelop, zhigalin
Cc: zhigalin, kdevelop-devel
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