[TYPO3-english] Implement example1 of USER_INT (from typo3 docs https://docs.typo3.org/typo3cms/TyposcriptReference/

[Martial]

Dear all,

I am trying to implement the example1. I would need to be able to execute custom php function from a page. I am not clear exactly what I need to do because there are lots of contradictory docs on the web. I am running latest typo3 version 8.7 or 8 LTS. I did test a few things but I am missing a few points I think.

Did anyone implement it and have it working properly ? If yes, can you share what you did ?

Thank you
Martial