- print_r: documentation ( source)
- putenv: documentation ( source)
- implode: documentation ( source)
- setlocale: documentation ( source)
<?php
$locale = 'ru_RU';
putenv("LANG=$locale" . '.UTF-8');
putenv("LANGUAGE=$locale" . '.UTF-8');
setlocale(LC_ALL, $locale . '.UTF-8'); // . '.UTF-8'
$arr = array(12.12,12,23,21.44,67.88);
print_r(implode(',', $arr));