Bug report

phpstan/phpstan-src#3897 has broken our pipelines as we use \K heavily (https://github.com/atk4/data/actions/runs/14046848345/job/39329419333).

PHPStan can be hotfixed by assuming all regexes containing \K are "not yet understood". But understanding \K is not that dificult, so better variant of fix would be to implement the support right away.

/cc @staabm

Code snippet that reproduces the problem

https://phpstan.org/r/bcf6e7a9-64b3-4bbd-b7d7-fb1c44f0efc8

Expected output

no error