Description:
------------
---
From manual page: https://php.net/messageformatter.formatmessage
---
For now, there is now way to define a default value. Please consider adding a way to specify the default value of a variable in pattern string.



Test script:
---------------
<?php
echo msgfmt_format_message('fr_FR', '{distance, plural, =0{Here}other{# km}undefined{No distance}}', []);
?>

Expected result:
----------------
Show "No distance" for example

Actual result:
--------------
{distance}