If you don't do anything, you can still call these methods and get the server's default locale.In the case of Linux (Ubuntu 16.04), it uses the $LANG global variable.Using the REPL: echo locale_get_default(); // en_USand then resetting the $LANG:tiikeri@ubuntu:~$ LANG="fi_FI.UTF-8"and back to the REPL:echo locale_get_default(); // fi_FI