Drop PHP 7.4 and PHP 8.0 support from MediaWiki
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T278139: Drop PHP 7.3 support in MediaWiki when appropriate | T358666: Drop PHP 8.1 support from MediaWiki

This is a placeholder task for when this work happens, so that other tasks can depend upon it.

Details

Other Assignee: Krinkle

Related Changes in Gerrit:

Subject	Repo	Branch	Lines +/-
build: Switch local image from composer-php74 to composer-php81	mediawiki/vendor	REL1_44	+1 -1
build: Switch local image from composer-php74 to composer-php81	mediawiki/vendor	REL1_43	+1 -1
composer.json: Bump to php >= 8.1.0	mediawiki/vendor	REL1_43	+7 -7
Drop PHP 7.4/8.0 support from master (forward-port from MW 1.42)	mediawiki/core	REL1_43	+30 -12
Drop PHP 7.4/8.0 support from master (forward-port from MW 1.42)	mediawiki/core	REL1_44	+30 -12
composer.json: Bump to php >= 8.1.0	mediawiki/vendor	REL1_44	+11 -11
composer.json: Bump to php >= 8.1.0	mediawiki/vendor	master	+5 -5
Update phan stubs for PHP 8.1	mediawiki/core	master	+1 K -1 K
Bump minimum target PHP version to 8.1	mediawiki/tools/phan	master	+4 -1
Drop various PHP 7.4/8.0 support hacks, no longer needed	mediawiki/core	master	+15 -99
Bump secondary CI from PHP 7.4 to 8.1	mediawiki/extensions/EntitySchema	master	+1 -1
Bump secondary CI from PHP 7.4 to 8.1	mediawiki/extensions/Wikibase	master	+5 -5
Drop PHP 7.4/8.0 support from master (forward-port from MW 1.42)	mediawiki/core	master	+32 -14
Zuul: [integration/quibble] Stop testing in PHP 7.4	integration/config	master	+8 -10
Zuul: Drop all PHP 7.4 testing for MediaWiki things	integration/config	master	+20 -49
build: Allow either monolog 2.x or monolog 3.x to be used	mediawiki/extensions/DonationInterface	master	+1 -1
build: Switch local image from composer-php74 to composer-php81	mediawiki/vendor	master	+1 -1
jjb: Migrate jobs silently using PHP 7.4 to 8.1	integration/config	master	+7 -7

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Status	Assigned	Task
		· · ·
Resolved	Reedy	T338103 Micro-optimize ApiResult::isMetadataKey with str_starts_with once we support PHP8+
Resolved	Reedy	T373753 Drop symfony/polyfill-php 73-81 from mediawiki-vendor
Resolved	seanleong-WMDE	T379930 Use WeakMap instead of an array in RestrictedEntityLookupFactory
Stalled	None	T334726 Use return type `never` in Wikibase
Open	None	T328919 Upgrade PHPUnit in MediaWiki code to PHPUnit 10
Resolved	Reedy	T378424 PHP 8.4: Implicitly nullable parameter declarations deprecated in qrcode vendor libs
Resolved	Jdforrester-WMF	T319055 Upgrade to psr/container 2.x
Resolved	Jdforrester-WMF	T328921 Drop PHP 7.4 and PHP 8.0 support from MediaWiki
Resolved	Krinkle	T319432 Migrate WMF production from PHP 7.4 to PHP 8.1
Resolved	Jdforrester-WMF	T359868 Drop PHP 7.4 and 8.0 support from MediaWiki 1.42; require PHP 8.1+
		· · ·

Event Timeline

There are a very large number of changes, so older changes are hidden. Show Older Changes

Jdforrester-WMF closed subtask T359868: Drop PHP 7.4 and 8.0 support from MediaWiki 1.42; require PHP 8.1+ as Resolved.Mar 18 2024, 3:02 PM

Novem_Linguae subscribed.Mar 28 2024, 8:41 PM

Reedy added a parent task: T373753: Drop symfony/polyfill-php 73-81 from mediawiki-vendor.Aug 31 2024, 9:28 PM

Reedy mentioned this in T373753: Drop symfony/polyfill-php 73-81 from mediawiki-vendor.

Jdforrester-WMF mentioned this in T356451: Upgrade psr/log to 3.x.Sep 13 2024, 6:23 PM

WMDE-leszek subscribed.Sep 15 2024, 5:49 PM

MSantos moved this task from Blocker to Not a blocker on the MW-1.43-release board.Oct 30 2024, 4:09 PM

Chlod subscribed.Nov 14 2024, 4:11 AM

Lucas_Werkmeister_WMDE mentioned this in T379930: Use WeakMap instead of an array in RestrictedEntityLookupFactory.Nov 14 2024, 4:35 PM

Jdforrester-WMF added a parent task: T379930: Use WeakMap instead of an array in RestrictedEntityLookupFactory.Nov 14 2024, 4:39 PM

WMDE-Fisch mentioned this in T382395: Docker-dev: Add phan support and instructions to the readme.Jan 8 2025, 4:48 PM

jijiki added a subtask: T276994: Provide an mwdebug functionality on kubernetes (mw-experimental).Jan 16 2025, 11:30 AM

Jdforrester-WMF mentioned this in T276994: Provide an mwdebug functionality on kubernetes (mw-experimental).Jan 16 2025, 2:06 PM

Jdforrester-WMF removed a subtask: T276994: Provide an mwdebug functionality on kubernetes (mw-experimental).

A_smart_kitten subscribed.Jan 16 2025, 10:31 PM

jijiki changed the status of subtask T319432: Migrate WMF production from PHP 7.4 to PHP 8.1 from Stalled to In Progress.Jan 24 2025, 2:18 PM

Lucas_Werkmeister_WMDE mentioned this in T386113: PHP 8.4: Wikibase CSVUnitStorage: fgetcsv(): the $escape parameter must be provided as its default value will change.Feb 11 2025, 4:18 PM

Change #1127083 had a related patch set uploaded (by Jforrester; author: Jforrester):

[integration/config@master] [DNM] Zuul: Drop all PHP 7.4 testing for MediaWiki things

https://gerrit.wikimedia.org/r/1127083

gerritbot added a project: Patch-For-Review.Mar 12 2025, 5:38 PM

Change #1128015 had a related patch set uploaded (by Jforrester; author: Jforrester):

[mediawiki/core@master] Drop PHP 7.4/8.0 support from master (already dropped from release branches

https://gerrit.wikimedia.org/r/1128015

Change #1128016 had a related patch set uploaded (by Krinkle; author: Jforrester):

[mediawiki/core@master] Drop various PHP 7.4/8.0 support hacks, no longer needed

https://gerrit.wikimedia.org/r/1128016

Krinkle renamed this task from Drop PHP 7.4 support from MediaWiki to Drop PHP 7.4 and PHP 8.0 support from MediaWiki.Apr 28 2025, 4:35 PM

Krinkle added projects: MW-1.42-release, MW-1.44-release.

Krinkle updated the task description. (Show Details)

Krinkle mentioned this in T358666: Drop PHP 8.1 support from MediaWiki.

Krinkle added parent tasks: T328919: Upgrade PHPUnit in MediaWiki code to PHPUnit 10, T334726: Use return type `never` in Wikibase, T378424: PHP 8.4: Implicitly nullable parameter declarations deprecated in qrcode vendor libs, T363639: web-auth/webauthn-lib must be upgraded to 4+ for PHP 8.2+ support.Apr 28 2025, 4:38 PM

Krinkle merged a task: T328922: Drop PHP 8.0 support from MediaWiki.

Krinkle added a project: PHP 8.0 support.

Krinkle moved this task from Deprecate or remove to Not a blocker on the MW-1.42-release board.

Daimona mentioned this in T243847: Add pcov PHP extension to wikimedia apt (and upgrade from 1.0.6-4+wmf1~buster1 to 1.0.11) so it can be used in Wikimedia CI.May 1 2025, 3:31 PM

Novem_Linguae mentioned this in T328919: Upgrade PHPUnit in MediaWiki code to PHPUnit 10.May 5 2025, 7:19 PM

Mentioned in SAL (#wikimedia-releng) [2025-05-13T19:27:02Z] <James_F> Zuul: Upgrade all Quibble 'apitests' jobs from 7.4 to 8.1, for T386691, T328921, T328922

Krinkle claimed this task.May 13 2025, 9:11 PM

Krinkle reassigned this task from Krinkle to Jdforrester-WMF.

Krinkle added a project: MediaWiki-Engineering.

Krinkle updated Other Assignee, added: Krinkle.

Krinkle subscribed.

MSantos moved this task from Inbox, needs triage to Cross-team / Strategic on the MediaWiki-Engineering board.May 14 2025, 1:44 PM

MSantos moved this task from Cross-team / Strategic to MW Release Working Group on the MediaWiki-Engineering board.May 14 2025, 1:50 PM

I have a dummy question to ask: once we get the green light from the ServiceOps team to proceed with the deprecation of PHP7.4, what's the effort for the work needed to proceed? Is it possible to measure how many weeks are needed to complete the work?

I'm interested in knowing it so I can make an assessment on the MW Release 1.44 timeline. cc/ @Krinkle and @Jdforrester-WMF

In T328921#10829567, @MSantos wrote:

I have a dummy question to ask: once we get the green light from the ServiceOps team to proceed with the deprecation of PHP7.4, what's the effort for the work needed to proceed? Is it possible to measure how many weeks are needed to complete the work?

Which work, exactly?

Your follow-up question below suggests you mean just the actual dropping of active PHP 7.4/8.0 support, which is already done in REL1_44 (like with REL1_43 and REL1_42).

The wider work of unwinding large parts of CI and other support will take a fair bit longer, but most of the obvious patches are already written and waiting to go.

Then there's the work that's blocked on this work (see the task tree), which potentially gets quite large, but I don't think any of that is in scope for this work.

I'm interested in knowing it so I can make an assessment on the MW Release 1.44 timeline. cc/ @Krinkle and @Jdforrester-WMF

I don't see how this is relevant to the 1.44 release timeline. PHP 7.4 and 8.0 support were dropped in MW 1.42, with a special hack in master to "temporarily" support it for Wikimedia production, and that remains the case.

MShilova_WMF subscribed.May 16 2025, 4:11 PM

Change #1147822 had a related patch set uploaded (by Krinkle; author: Krinkle):

[mediawiki/vendor@master] build: Switch local image from composer-php74 to composer-php81

https://gerrit.wikimedia.org/r/1147822

In T328921#10830122, @Jdforrester-WMF wrote:

In T328921#10829567, @MSantos wrote:

I have a dummy question to ask: once we get the green light from the ServiceOps team to proceed with the deprecation of PHP7.4, what's the effort for the work needed to proceed? Is it possible to measure how many weeks are needed to complete the work?

[…] Your follow-up question below suggests you mean just the actual dropping of active PHP 7.4/8.0 support, which is already done in REL1_44 (like with REL1_43 and REL1_42).

[…] I don't see how this is relevant to the 1.44 release timeline. PHP 7.4 and 8.0 support were dropped in MW 1.42, with a special hack […]

I believe Mateus, by proxy of me, is operating on the assumption that the "backwards cherry-pick" that we applied to MW 1.42 and MW 1.43 (i.e. the dropping of 7.4 and 8.0 support, which is a patch we kind of backported to those two REL branches, but hasn't landed in the master branch yet), is something we prefer not to repeat for the MW 1.44 release. Instead, we're aiming to upgrade "for real" this release cycle, as per the OKR/Hypothesis for the MW release cycle and PHP upgrade to align.

In addition to the literal "drop support" patch, given that we aim to the upgrade "for real" this time, it also means we can (without diverging prod from release, and without releasing code we haven't deployed at scale) finally unblock all other changes we've been holding back for a while; such as overdue upgrades to Composer library dependencies that we are running on EOL versions due to latest versions requiring PHP 8.

Change #1127093 had a related patch set uploaded (by Krinkle; author: Jforrester):

[integration/config@master] Zuul: [integration/quibble] Stop testing in PHP 7.4

https://gerrit.wikimedia.org/r/1127093

Change #1127117 had a related patch set uploaded (by Krinkle; author: Jforrester):

[integration/config@master] Docker: Provide quibble-bullseye-php81-coverage

https://gerrit.wikimedia.org/r/1127117

Change #1127118 had a related patch set uploaded (by Krinkle; author: Jforrester):

[integration/config@master] jjb: Migrate jobs silently using PHP 7.4 to 8.1

https://gerrit.wikimedia.org/r/1127118

Change #1127118 merged by jenkins-bot:

[integration/config@master] jjb: Migrate jobs silently using PHP 7.4 to 8.1

https://gerrit.wikimedia.org/r/1127118

In T328921#10836701, @Krinkle wrote:

In T328921#10830122, @Jdforrester-WMF wrote:

In T328921#10829567, @MSantos wrote:

I have a dummy question to ask: once we get the green light from the ServiceOps team to proceed with the deprecation of PHP7.4, what's the effort for the work needed to proceed? Is it possible to measure how many weeks are needed to complete the work?

[…] Your follow-up question below suggests you mean just the actual dropping of active PHP 7.4/8.0 support, which is already done in REL1_44 (like with REL1_43 and REL1_42).

[…] I don't see how this is relevant to the 1.44 release timeline. PHP 7.4 and 8.0 support were dropped in MW 1.42, with a special hack […]

I believe Mateus, by proxy of me, is operating on the assumption that the "backwards cherry-pick" that we applied to MW 1.42 and MW 1.43 (i.e. the dropping of 7.4 and 8.0 support, which is a patch we kind of backported to those two REL branches, but hasn't landed in the master branch yet), is something we prefer not to repeat for the MW 1.44 release.

Oh, right; that assumption isn't correct, the fix already landed in REL1_44 two weeks ago. https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1143077

Instead, we're aiming to upgrade "for real" this release cycle, as per the OKR/Hypothesis for the MW release cycle and PHP upgrade to align.

"This cycle" is now REL1_45, as the REL1_44 cut has already happened and SRE still aren't in a place for us to do this (and may well not be for weeks yet). We can't hold back rc.0/etc. on the off-chance that Wikimedia prod will finally be ready.

Change #1147822 merged by jenkins-bot:

[mediawiki/vendor@master] build: Switch local image from composer-php74 to composer-php81

https://gerrit.wikimedia.org/r/1147822

Change #1148890 had a related patch set uploaded (by Krinkle; author: Krinkle):

[mediawiki/extensions/DonationInterface@master] build: Allow either monolog 2.x or monolog 3.x to be used

https://gerrit.wikimedia.org/r/1148890

ReleaseTaggerBot added a project: MW-1.45-notes (1.45.0-wmf.3; 2025-05-27).May 21 2025, 3:00 PM

Change #1148890 merged by jenkins-bot:

[mediawiki/extensions/DonationInterface@master] build: Allow either monolog 2.x or monolog 3.x to be used

https://gerrit.wikimedia.org/r/1148890

GreenReaper unsubscribed.May 21 2025, 3:38 PM

Reedy mentioned this in T395214: Multiple test failures for MediaWiki\Minerva\SkinMinervaTest::testHasPageTabs.May 25 2025, 9:13 PM

Daimona mentioned this in T395962: IPInfo: Selenium tests are flakily hanging.Jun 4 2025, 12:21 PM

Jdforrester-WMF added a parent task: T319055: Upgrade to psr/container 2.x.Jun 4 2025, 4:35 PM

Tacsipacsi subscribed.Jun 4 2025, 6:42 PM

Change #1127083 merged by jenkins-bot:

[integration/config@master] Zuul: Drop all PHP 7.4 testing for MediaWiki things

https://gerrit.wikimedia.org/r/1127083

Mentioned in SAL (#wikimedia-releng) [2025-06-05T16:09:32Z] <James_F> Zuul: Drop all PHP 7.4 testing for MediaWiki things, for T328921 and T328922

Change #1127093 merged by jenkins-bot:

[integration/config@master] Zuul: [integration/quibble] Stop testing in PHP 7.4

https://gerrit.wikimedia.org/r/1127093

Mentioned in SAL (#wikimedia-releng) [2025-06-05T16:26:26Z] <James_F> Zuul: [integration/quibble] Stop testing in PHP 7.4, for T328921 and T328922

Change #1128015 merged by jenkins-bot:

[mediawiki/core@master] Drop PHP 7.4/8.0 support from master (forward-port from MW 1.42)

https://gerrit.wikimedia.org/r/1128015

Change #1154237 had a related patch set uploaded (by Lucas Werkmeister (WMDE); author: Lucas Werkmeister (WMDE)):

[mediawiki/extensions/EntitySchema@master] Bump secondary CI from PHP 7.4 to 8.1

https://gerrit.wikimedia.org/r/1154237

Change #1154239 had a related patch set uploaded (by Lucas Werkmeister (WMDE); author: Lucas Werkmeister (WMDE)):

[mediawiki/extensions/Wikibase@master] Bump secondary CI from PHP 7.4 to 8.1

https://gerrit.wikimedia.org/r/1154239

Change #1154239 abandoned by Lucas Werkmeister (WMDE):

[mediawiki/extensions/Wikibase@master] Bump secondary CI from PHP 7.4 to 8.1

Reason:

dupe of I0796e7f9f2

https://gerrit.wikimedia.org/r/1154239

Change #1154237 merged by jenkins-bot:

[mediawiki/extensions/EntitySchema@master] Bump secondary CI from PHP 7.4 to 8.1

https://gerrit.wikimedia.org/r/1154237

ReleaseTaggerBot edited projects, added MW-1.45-notes (1.45.0-wmf.5; 2025-06-10); removed MW-1.45-notes (1.45.0-wmf.3; 2025-05-27).Jun 6 2025, 10:00 AM

Change #1154325 had a related patch set uploaded (by Daimona Eaytoy; author: Daimona Eaytoy):

[mediawiki/core@master] Update phan stubs for PHP 8.1

https://gerrit.wikimedia.org/r/1154325

Change #1154327 had a related patch set uploaded (by Daimona Eaytoy; author: Daimona Eaytoy):

[mediawiki/tools/phan@master] Bump minimum target PHP version to 8.1

https://gerrit.wikimedia.org/r/1154327

Change #1128016 merged by jenkins-bot:

[mediawiki/core@master] Drop various PHP 7.4/8.0 support hacks, no longer needed

https://gerrit.wikimedia.org/r/1128016

Change #1154327 merged by jenkins-bot:

[mediawiki/tools/phan@master] Bump minimum target PHP version to 8.1

https://gerrit.wikimedia.org/r/1154327

Let's call this complete.

Change #1154325 merged by jenkins-bot:

[mediawiki/core@master] Update phan stubs for PHP 8.1

https://gerrit.wikimedia.org/r/1154325

matej_suchanek removed a project: Patch-For-Review.Jun 6 2025, 6:57 PM

Change #1154397 had a related patch set uploaded (by Reedy; author: Reedy):

[mediawiki/vendor@master] composer.json: Bump to php >= 8.1.0

https://gerrit.wikimedia.org/r/1154397

gerritbot added a project: Patch-For-Review.Jun 8 2025, 9:23 AM

Change #1154397 merged by jenkins-bot:

[mediawiki/vendor@master] composer.json: Bump to php >= 8.1.0

https://gerrit.wikimedia.org/r/1154397

Jdforrester-WMF removed a parent task: T363639: web-auth/webauthn-lib must be upgraded to 4+ for PHP 8.2+ support.Jun 8 2025, 6:54 PM

matmarex mentioned this in T396813: Make use of PHP 8.0 and 8.1 features in existing code.Jun 12 2025, 11:33 PM

Change #1159372 had a related patch set uploaded (by Reedy; author: Reedy):

[mediawiki/vendor@REL1_44] composer.json: Bump to php >= 8.1.0

https://gerrit.wikimedia.org/r/1159372

Change #1159375 had a related patch set uploaded (by Reedy; author: Reedy):

[mediawiki/vendor@REL1_43] composer.json: Bump to php >= 8.1.0

https://gerrit.wikimedia.org/r/1159375

Change #1159372 merged by Reedy:

[mediawiki/vendor@REL1_44] composer.json: Bump to php >= 8.1.0

https://gerrit.wikimedia.org/r/1159372

Change #1159375 merged by Reedy:

[mediawiki/vendor@REL1_43] composer.json: Bump to php >= 8.1.0

https://gerrit.wikimedia.org/r/1159375

Change #1160713 had a related patch set uploaded (by Reedy; author: Jforrester):

[mediawiki/core@REL1_43] Drop PHP 7.4/8.0 support from master (forward-port from MW 1.42)

https://gerrit.wikimedia.org/r/1160713

Change #1160716 had a related patch set uploaded (by Reedy; author: Jforrester):

[mediawiki/core@REL1_44] Drop PHP 7.4/8.0 support from master (forward-port from MW 1.42)

https://gerrit.wikimedia.org/r/1160716

Change #1160716 merged by jenkins-bot:

[mediawiki/core@REL1_44] Drop PHP 7.4/8.0 support from master (forward-port from MW 1.42)

https://gerrit.wikimedia.org/r/1160716

Change #1160713 merged by jenkins-bot:

[mediawiki/core@REL1_43] Drop PHP 7.4/8.0 support from master (forward-port from MW 1.42)

https://gerrit.wikimedia.org/r/1160713

Krinkle closed subtask T319432: Migrate WMF production from PHP 7.4 to PHP 8.1 as Resolved.Aug 3 2025, 10:39 PM

Change #1199257 had a related patch set uploaded (by Reedy; author: Krinkle):

[mediawiki/vendor@REL1_44] build: Switch local image from composer-php74 to composer-php81

https://gerrit.wikimedia.org/r/1199257

Change #1199259 had a related patch set uploaded (by Reedy; author: Krinkle):

[mediawiki/vendor@REL1_43] build: Switch local image from composer-php74 to composer-php81

https://gerrit.wikimedia.org/r/1199259

Change #1199259 merged by Reedy: