Attention
TYPO3 v8 has reached its end-of-life March 31st, 2020 and is not maintained by the community anymore.
You can order Extended Long Term Support (ELTS) here: TYPO3 ELTS.
Extending the $TCA array¶
Being a PHP array, the Table Configuration Array can be easily
extended. It can be accessed as the global variable $GLOBALS['TCA']
.
TYPO3 also provides APIs for making this simpler.