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Date: Fri, 12 Sep 2025 22:13:04 +0200
Message-ID: <CAA6rDWBCqMGg-KF59ENkDb+D4GZMHfkurWRned1cjdcZ6mDmww@mail.gmail.com>
Subject: [PHP-DEV] Environment Variable based PHP Extension loading
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From: s.sayakci@gmail.com (Soner Sayakci)

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Hey,

I would like to load PHP extensions by environment variables in a
containerized environment. All existing solutions are moving files in an
entrypoint and this does not work for read-only containers. Why this?
Extensions like Blackfire/XDebug/OpenTelemetry/Tideways do not like each to
run at the same time, and having to build less containers simplifies a lot.

It's already possible to use environment variables in the php.ini like so:

extension=${PHP_PROFILER}

So it's possible to toggle the extensions already, the only thing that is
not working is passing an empty string (I don't want any profiler). Then we
get warnings like: Warning: PHP Startup: Unable to load dynamic library '"

Therefore I opened a pull request to ignore extension entries with empty
strings, so this works with that case too. Looking for feedback in the pull
request https://github.com/php/php-src/pull/19816

Thanks!

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<div dir=3D"ltr">Hey,<div><br></div><div>I would like to load PHP extension=
s by environment variables in a containerized environment. All existing sol=
utions are moving files in an entrypoint and this does not work for read-on=
ly containers. Why this? Extensions like Blackfire/XDebug/OpenTelemetry/Tid=
eways do not like each to run at the same time, and having to build less co=
ntainers simplifies a lot.</div><div><br></div><div>It&#39;s already possib=
le to use environment variables in the php.ini like so:</div><div><br></div=
><div>extension=3D${PHP_PROFILER}</div><div><br></div><div>So it&#39;s poss=
ible to toggle the extensions already, the only thing that is not working i=
s passing an empty string (I don&#39;t want any profiler). Then we get warn=
ings like: Warning: PHP Startup: Unable to load dynamic library &#39;&quot;=
</div><div><br></div><div>Therefore I opened=C2=A0a pull request to ignore =
extension entries with empty strings, so this works with that case too. Loo=
king for feedback in the pull request=C2=A0<a href=3D"https://github.com/ph=
p/php-src/pull/19816" target=3D"_blank">https://github.com/php/php-src/pull=
/19816</a></div><div><br></div><div>Thanks!</div></div>

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