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Date: Mon, 3 Feb 2014 12:28:27 +0100
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To: Yasuo Ohgaki <yohgaki@ohgaki.net>
Cc: internals <internals@lists.php.net>, Stas Malyshev <smalyshev@sugarcrm.com>
Content-Type: multipart/alternative; boundary=047d7bdc781086c32204f17ed27b
Subject: Re: [PHP-DEV] Declare minimum PHP version required?
From: bof@bof.de (Patrick Schaaf)

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Am 03.02.2014 11:56 schrieb "Yasuo Ohgaki" <yohgaki@ohgaki.net>:
>
> We may extend declare() more. For example, loaded extensions.
>
> declare(module='pgsql,openssl');
>
> With opcache loaded extension check may be completely skipped.

I like this.

It would be even more useful to me - kind of a more structured #ifdef - if

A) it would work at the block level, not failing, but eliding the block:

    declare(module='redis') {
        use redis server
    }

(instead of a class_exists check with the associated runtime overhead, both
in execution time and opcache memory usage

B) it would support testing for constants

declare(const='ADMIN_SERVER') { ... }
declare(const_false='DEVELOPMENT_SERVER') { ... }

which would really be a plus for us, using MINIT time constants provided by
the defcon extension (http://github.com/infusion/PHP-Defcon)

best regards
  Patrick

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