Alright, so I'm using Notepad++ to write up a webpage that contains both English and Japanese characters. The website also uses PHP sessions.
After wracking my brain for a while wondering why I was getting this error:
'Cannot send session cache limiter - headers already sent'
I realized that because I was using 'Encode in UTF-8', the invisible BOM output was screwing up my PHP headers.
So I switched to 'Encode in UTF-8 without BOM' in Notepad++. Now my PHP sessions work and it doesn't complain about headers, but now Japanese characters don't properly display on the website (although they appear just fine in Notepad++). I traded one problem for another.
How can I get Japanese characters to properly display on my website while still avoiding the UTF-8 encoding issue of sending output before PHP session_start?
Try to add addDefaultCharset UTF-8 to .htaccess file in the root of your application