Describe the Proposal

In addition to all other types we should also have an intersection type, which would be almost the same as union type:

intersection<ineger&positive-integer>

API Adjustments

function type_union(Type $first, Type $second, Type ...$types) : UnionType

Are you intenting to also work on proposed change?

It's perfectly fine to just propose changes and wait for others to pick them up.

Yes

Are you interested in sponsoring this change? If you can't find time to work on given proposal but it's

time sensitive, it might be a good idea to consider sponsoring this change. Please find more details at https://flow-php.com/sponsor/

None

Integration & Dependencies

No response