[CLEANUP] Ensure variables initalized and fix code smell

* Ensure that variables are correctly initalized.
* Fix some php docs.
* Initalizes for loop iterator variables before the loop if they are
  also used after the for loop is finished.
* Remove superfluous function arguments.

Resolves: #79892
Releases: master
Change-Id: I75109b2914f2b05806a303837b7aad79be8e3707
Reviewed-on: https://review.typo3.org/51742


Reviewed-by: Thomas Hohn <thomas@hohn.dk>
Tested-by: Thomas Hohn <thomas@hohn.dk>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Christer V <cvi@systime.dk>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>