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Message-ID: <543D5C5F.5080304@lerdorf.com>
Date: Tue, 14 Oct 2014 10:24:47 -0700
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To: Stas Malyshev <smalyshev@sugarcrm.com>, 
 Xinchen Hui <laruence@php.net>
CC: Zeev Suraski <zeev@zend.com>, PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] RFC: PHP 7.0 timeline
From: rasmus@lerdorf.com (Rasmus Lerdorf)

On 10/14/2014 10:14 AM, Stas Malyshev wrote:
> Hi!
> 
>> IMO,  AST, INT64, NG, Uniforme variables style is enough for a new
>> marjor version.. why we still need to wait?
> 
> We don't need to just "wait", as sit and do nothing. We need to allocate
> time for other features.

There are also quite a few really low-level changes in master right now.
It is going to take quite a bit of time to stabilize. For example,
something as basic as array iteration is inadvertently different:

  https://bugs.php.net/68215

PHP is a mature project with reams and reams of legacy code out there.
Every single change, no matter how small, is like throwing a hand
grenade in a lake. There is the initial explosion and chaos and then the
ripples that go on and on. Dealing with all these ripples takes a lot
more time than most people think. For people who think that 1 year from
now is slow and conservative, it really isn't. It is quite aggressive
given the number of really low-level changes that are already in master.
Even if we froze the tree today I expect it could stretch to close to a
year to stabilize.

-Rasmus