yes, the early php stdlib functions sometimes had mangled names by replacing a "to" with 2, and maybe shortening some names but not others due to this reason. At least, that's what the creator of php says here: https://news-web.php.net/php.internals/70691

Also fun read: https://eev.ee/blog/2012/04/09/php-a-fractal-of-bad-design/