"opcache.memory_consumption cannot be changed when OPcache is already set up" warning on 8.5 ZTS

Description

In PHP 8.5.6, when running a ZTS application with the following settings in the ini file,

opcache.memory_consumption cannot be changed when OPcache is already set up.

this warning is printed once for each thread that is started.

opcache.enable=1
opcache.memory_consumption=256
opcache.log_verbosity_level=2

I reproduced it with FrankenPHP's ZTS/worker mode, but I have confirmed that it reproduces even without FrankenPHP.
Here are the reproduction steps with FrankenPHP.

docker run -d --name fp-repro -v /tmp/fp-repro/zz-repro.ini:/usr/local/etc/php/conf.d/zz-repro.ini:ro  dunglas/frankenphp:php8.5

It does not affect the actual SHM size, but it also appears that the value referenced by worker threads via opcache_get_configuration and similar functions is reported as 0.

The condition that triggers this warning is currently if (accel_startup_ok), but it looks like the condition stage != ZEND_INI_STAGE_STARTUP needs to be added.

PHP Version

PHP 8.5.6 (cli) (built: May 19 2026 23:07:51) (ZTS)
Copyright (c) The PHP Group
Built by https://github.com/docker-library/php
Zend Engine v4.5.6, Copyright (c) Zend Technologies
    with Zend OPcache v8.5.6, Copyright (c), by Zend Technologies

Operating System

No response

accel_startup_ok 条件周辺の OPcache の INI 処理から始め、ZTS ワーカースレッドで使用される起動ステージと比較します。提供された FrankenPHP Docker コマンドで警告を再現し、その後、警告が抑制され、実際の共有メモリサイズを変更せずに opcache_get_configuration が設定値を報告することを確認します。