https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=959527
https://www.php.net/manual/en/language.oop5.constants.php (Example #5 says it was added in PHP 7.1)
https://github.com/phpmyadmin/motranslator/blob/a879a87ab9aa3e21cd085da1915147f4b5f8a230/src/Translator.php#L58