> Generally, such a limit is imposed by the threat of violence from other folks who interact with your code.

https://stackoverflow.com/questions/4565805/is-there-a-limit...

So no.

Though funny side note, there is a historic reason that function names are so inconsistent in PHP: The length of the name of a function was used for hashing. So you wanted a to vary the length to achieve a roughly even distribution of lengths.

https://news-web.php.net/php.internals/70691