Bug report

When using the PDO::quote() method, which has a return signature of string|false phpstan will throw an error when checking if the returned value is false. This should be allowed, since the function can return false value.

If it weren't a strict check the return value '' (empty string) would trigger the if-condition in the playground linked.

Code snippet that reproduces the problem

https://phpstan.org/r/4a7accc9-ee76-4fc2-be27-4a23b12f4be6

Expected output

There should not be any errors.

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