implode and explode vs. join and split - no documentation and inconsistencies

Edit: smarty.net shows up in the Google search results before GitHub. There should be something at the top of all Smarty.net documentation pages that says "Ignore this and see the documentation on Github" with a link to the up to date documentation.

Ignore the rest below. This was my confusion based on the smarty.net website.

The deprecation warning for implode says use join instead.

Similarly the deprecation warning for explode says use split instead.

Documentation is here: https://www.smarty.net/docs/en/language.modifiers.tpl

There is no documentation for split or join.

Could someone add documentation for split and join?

Also, I want to echo this ticket: https://github.com/smarty-php/smarty/issues/1098

In PHP, join and split are aliases for implode and explode, yet they work differently in Smarty. That is counterintuitive. At the minimum that needs to be documented.

Thanks.

Start with the Smarty language modifiers documentation at https://www.smarty.net/docs/en/language.modifiers.tpl and compare it with the up-to-date documentation on GitHub. Done means the split and join behavior and their relationship to implode and explode are documented, and the requested notice links readers from outdated smarty.net pages to GitHub documentation.