Description:
------------
https://www.php.net/manual/en/intldateformatter.create.php
In the docs it sais at parameters section:

"locale: Locale to use when formatting or parsing or NULL to use the value specified in the ini setting intl.default_locale."


If you try to use strict mode with locale = null, the script fails with

"PHP Fatal error:  Uncaught TypeError: IntlDateFormatter::create() expects parameter 1 to be string, null given in ..."




Test script:
---------------
<?php

declare(strict_types=1);

$format =  $formatter = \IntlDateFormatter::create(null, \IntlDateFormatter::NONE, \IntlDateFormatter::NONE);