Can't make (UTF-8) traditional Chinese character to work in PHP gettext extension (.po and .mo files created in poEdit)

Question

I checked MSDN and the locale string is zh_Hant, but I also tried with zh_TW (Chinese, Taiwan).

The traditional Chinese characters look OK in the poEditor, but when

Answer 1

I finally solved it. I had to have the following to file localization.php.

bind_textdomain_codeset("messages", 'UTF-8');