When would you throw a DomainException in PHP?

Question

I was going through the list of predefined Exceptions in PHP and I noticed the DomainException. Anyone know what does DomainException mean? Does it mean failed data model valida

Answer 1

The description of RangeException is a bit more helpful:

Exception thrown to indicate range errors during program execution. Normally this means there was an arithmetic error other than under/overflow. This is the runtime version of DomainException.

I think it is applicable to non-arithmetic too, e.g. see this user comment.

For example, if you expect a value to be in the set {'jpeg', 'png', 'gif', 'bmp'} and you receive something else like 'foo', it's a good candidate for a DomainException (logic) / RangeException (runtime). I'm pretty sure you could think of many other use cases.

Also, I just found this useful article, which provide more thorough explanations than php.net: How to use built-in SPL exception classes for better error handling