Consider bcdiv's return type as string if divisior is not 0 #3551
Description
Feature request
Right now Phpstan is unhappy with this: https://phpstan.org/r/45d2d962-9ef2-451d-b121-de09a7421e43
(strlen(bcdiv('2','2',2));)
The docs say:
Returns the result of the division as a string, or NULL if divisor is 0.
It would be nice if phpstan could consider the return type as string and not string|null since I'm using '2' here.