[RFC][Discussion] use construct (Block Scoping)

Hello internals, Tim and I would like to open the discussion on our new RFC that we've been working on: "use construct (Block Scoping)". We wanted to raise a few initial points: - The RFC proposes the use keyword. What are your thoughts on a new ` using` keyword instead, similar to C# or Hack? - How do you feel about the questions raised in the "Open Issues" section? - What are your general thoughts on the RFC? Please find the following resources for your reference: - RFC: https://wiki.php.net/rfc/optin_block_scoping - POC: https://github.com/php/php-src/compare/master...TimWolla:php-src:block-scope Thanks, Seifeddine Gmati.