Hi internals, I'd like to start the discussion on the "explicit call-site pass-by-reference" RFC again: https://wiki.php.net/rfc/explicit_send_by_ref
The RFC proposes to allow using a "&" marker at the call-site (in addition to the declaration-site) when by-reference passing is used. Relative to the last time this was discussed, there are three main changes to the proposal: 1. The RFC proposes a mode in which the use of & at the call-site is required. This depends on the outcome of the "language evolution" RFC. It uses a declare as a placeholder, but if we go with editions, then the mode would be enabled in the next edition instead. (If we go with none of the options, then this part of the RFC becomes void.) 2. The RFC now also tackles a long-standing problem in the handling of __call/__callStatic and call_user_func. The explicit call-site annotation allows us to use these features together with by-reference arguments. I failed to realize that the RFC can nicely solve this problem when originally proposing it. 3. The RFC now discusses the old "call-time pass-by-reference" feature in more detail, and how this RFC differs from it. The important difference is that this RFC requires the marker at both call *and* declaration. Regards, Nikita
