Explode plugin should allow null / empty strings

I fixed this for the Implode and Explode plugins by using the same logic as the StripTags plugin.

But there are several other plugins that check is_string() and is_array() and throw an exception on an empty value.

I think there should be a policy of whether tamper is expected to fail on an empty value or not.

I would argue against failing on an empty value because you may want to import many entities, some of which have a field set and others that do not.

This problem becomes obvious when importing via JSON with feeds_ex, as JSON objects may not have certain keys (that are set to be tampered with), and so when the JSON object doesn't have a key, the value will be null, throwing an exception when really processing should continue.

Yes, sorry this has been a major pain point for many.

https://www.drupal.org/project/tamper/issues/3332785 ✨ Improve handling of empty data Active is where I tried a while ago to consolidate this but haven't had time to push it further.

Happy for this, we probably just need to update the unit test cases as well to add one for null and ''

Great, I'm happy to defer to that issue!