On Wed, Sep 21, 2016 at 8:47 PM, Nicolas Grekas <nicolas.gre...@gmail.com>
> > > See https://github.com/php/php-src/pull/2136
> > On a technical note this is a potentially breaking change for C
> > extensions. Since it is a currently a `zend_bool` its value is
> > truthy/falsy; you are now applying specific meaning to values.
> > Maybe someone else will have more insight into what might be affected
> > realistically, but this is one reason this was not implemented this
> > way to begin with.
> Note that Nikita's proposal (i.e. stick to 7.0 behavior and ignore the
> "nullable" bit) is free from this problem yet really fine also as far as BC
> is concerned.
Here's a PR for the revert-to-7.0 + deprecate variant, in case we wish to
adopt it: https://github.com/php/php-src/pull/2137