problem with mysql utf-8 when reply or edit message

[Tai Chao]

Hi All,

someone can help me

i try to fix utf-8 mysql problem
when post new topic Thai language (utf-8) it ok
but when reply or edit in this topic system will show ??? all

###new post OK


###view or edit or reply not work


i try to do follow from
http://www.coderanch.com/t/577789/jforum/Fixed-Incorrect-DB-encoding-posts#2628678
http://www.coderanch.com/t/577514/jforum/utf-hungarian-characters-work-post#2627683
http://www.coderanch.com/t/575915/jforum/setup-thai-language
but still not work


this is website foundation for Thai chillden
i develop free for them
please help me please...