setlocale() Does Not Affect Echo Anymore

setlocale() used to impact several functions, including echo. With the French or German (or other) conventions, the decimal separator is a comma, and PHP makes the conversion at echo time.

This is not the case anymore in PHP 8.0: anytime the float is converted to a string, the locale formatting is not applied anymore.

It is recommended to make this conversion explicit by using printf(), number_format() or a custom formatter function.

PHP code

<?php

setlocale(LC_ALL, 'fr_FR.UTF-8');

echo 1003.14;

?>

Before

1003,14

After

1003.14

PHP version change

This behavior changed in 8.0.