Respect \\ Validation-验证字符串（如果不为空），否则返回true

Question

I'm using Respect\\Validation for validate fields. Some of my fields are not mandatory, as the phone number, but if they are not empty they must be validated. Following my current code:

v::Phone()->validate($phoneNumber); // it should return true if $phoneNumber is empty

How to do it?

Answer 1

根据docs ，看起来应该是：

v::optional(v::Phone())->validate($phoneNumber);