Assignment inside match statement no longer recognized

Bug report

Given a statement like this:

$path = match (true) {
	is_dir($baseDir = dirname(__DIR__).'/lang') => $baseDir,
	default => '/translations',
};

PHPStan reports Variable $baseDir might not be defined.

This was passing in version 2.1.33 and is now an issue in 2.1.34

Code snippet that reproduces the problem

https://phpstan.org/r/93712f26-522b-4374-ad30-f458a3ae7748

Expected output

No errors

git bisect says the error appeared with phpstan/phpstan-src@3beb8c6

3beb8c626c5c342dead917ff733f2a404d497280 is the first bad commit
commit 3beb8c626c5c342dead917ff733f2a404d497280
Author: Ondrej Mirtes <ondrej@mirtes.cz>
Date:   Thu Dec 11 12:52:24 2025 +0100

    Fix match analysis

 src/Analyser/NodeScopeResolver.php | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
bisect found first bad commit

Fix assignment inside match arm condition not recognized

Fix phpstan/phpstan#13981: Assignment inside match statement no longe…

Closed via merging phpstan/phpstan-src#5120

Updated PHPStan to commit 375185d95d26c811e08cb001b23705e11f87eb4d

Updated PHPStan to commit afd310d3026c8611f34b402bc039be9e3f31a97a

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

Fix phpstan/phpstan#13981: Assignment inside match statement no longe…

Navigation Menu

Repository navigation

Assignment inside match statement no longer recognized #13981

Bug report

Code snippet that reproduces the problem

Expected output

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Assignment inside match statement no longer recognized #13981

Description

Bug report

Code snippet that reproduces the problem

Expected output

Activity

staabm commented on Jan 21, 2026

phpstan-bot commented on Mar 5, 2026

github-actions commented on Apr 6, 2026

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions