Bug report

I found another case regarding #64 which has been solved in 2017, so I'll copy the description there:

sscanf has an "additional" way of specifying strings using regex-like character classes. It's handy when parsing strings with non-space separators. Not all these character classes are not correctly detected by PHPStan.

sscanf call like the following one throws Call to sscanf contains 1 placeholder, 3 values given.

sscanf('appletone_day_1', '%*[a-z]_day%s', $day_number);

but it's actually a correct sscanf call, see https://3v4l.org/PNEok (also explains the character classes thing)

Code snippet that reproduces the problem

https://phpstan.org/r/e7d60aa1-3a26-403a-a113-eb520de5bfc9

Expected output

No issue should be reported.

Did PHPStan help you today? Did it make you happy in any way?

Yes! It is a really great and interesting tool I'm excited about playing with when testing my code. It detects overlooked bugs like undefined variables and points to dead/unused code which we happily remove after.