Adding common problem cases and possible solutions
Adding common problem cases and possible solutions

See https://github.com/vimeo/psalm/issues/8133#issuecomment-1162010190

Don't know if this is the best way to explain this, but it's a start :-)

Is there a better way to add the link to https://psalm.dev/docs/annotating_code/supported_annotations/#psalm-mutation-free ?

I also removed the `<?php` tag from the code block.
vimeo/psalm,vimeo/psalm