Support for Symfony 6.4 in the 4.3 branch is broken

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#8,564 opened on Sep 22, 2026 0 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 2/5
Estimated time: 1-3 hours
Newbie friendliness: 65/100

Issue type: Bug
Clarity: Clearly specified
Activity status: Active
Tech stack: php, symfony
Domain: backend, testing

Research direction

Look at the ApiTestCase class and the change from pull request #8523. Find where setBrowserKitAssertionsAsVerbose() is called and add a version check for Symfony 7. Run the tests in a Symfony 6.4 environment to verify the fix.

Written by the indexing model from the issue text.

Description

API Platform version(s) affected: 4.3.19

Description
Since version 4.3.19, it is impossible to use APIP with Symfony 6.4 even though Composer allows it.

The reason is that a call to a function setBrowserKitAssertionsAsVerbose() that only exists in Symfony 7 was added in https://github.com/api-platform/core/pull/8523.

How to reproduce

Install api-platform/core 4.3 in a Symfony 6.4 app. Launch tests from classes that inherit from APIP's ApiTestCase.

Possible Solution

Perhaps have a capabilities check to avoid calling a non-existing function?

Dominant language: PHP
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Merged PRs (30d): 55

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