Hi,
When using json_encode or json_decode with the `JSON_THROW_ON_ERROR` flag,
`JsonException` might be thrown.
When using `new DateTime('foo')`, a generic `Exception` is thrown.
Incidentally, I wonder why it's not an `InvalidArgumentException` (but that
could be another debate).
But my main point is that I think it would be useful to use a specific
exception
```
class DateException extends Exception {}
```
- It allows a specific treatment when catching exceptions
- It allows a specific analysis when using static analysis tools like Psalm
or PHPStan.
In a general way, I would say that PHP class/method should always use
scoped Exception instead of generics ones.
I know nothing about how php is implemented but I would say introducing
DateException shouldn't be too hard and it's BC. What do you think ?
