money_format() not showing currency

Question

I'm trying to use money_format function.

<?php

$number = 1299.46;

setlocale(LC_MONETARY, 'en_US');
echo money_format('%i', $number); // Outputs 1299.46

While it should print $ sign or USD ?

I'm on linux hosting.

Thanks

Answer 1

Locales are constants defined by the operation system.

I use Ubuntu for the following example.

1. check which locales are supported:

   locale -a
   

2. add the locales you want (for example ru):

   sudo locale-gen ru_RU
   sudo locale-gen ru_RU.UTF-8
   

3. run this update comand

   sudo update-locale 
   

4. restart php fpm ( check your php version service name like soservice --status-all)

   sudo service php7.2-fpm restart
   

But be careful, because most likely you are useing Apache with "mod_php" because it is the most popular one. And this one works in multi thread environment, when setlocale() is not thread safe. Look here for details