从VBulletin 3转换为PHPBB3后的MySQL列编码

The following screen shot is going to be good introduction for the issue:

It is from phpmyadmin for the table topics of phpbb3. It shows that at the same table there are two columns one renders text in wrong encoding topic_title and other topic_first_poster_name renders the text correct.

In the convert script I set the $encoding to be windows-1256 as advised because my later VB forum was using windows-1256.

The screen shotted table has utf8_bin collation and topic_title collation is utf8_unicode_ci while topic_first_poster_name is utf8_bin.

What I need is to convert the text of topic_title to be rendered correctly because it make phpbb3 to render it wrong.

I tried the hint in this article about fixing column encoding but I miss able to determine what encoding that I have to use:

UPDATE table SET column=CONVERT(CONVERT(CONVERT(column USING binary) USING utf8) USING cp1251) WHERE id=123;

I have made the following using cp1256 but I did not get any result:

UPDATE t_topics SET topic_title=CONVERT(CONVERT(CONVERT(topic_title USING binary) USING utf8) USING cp1256) WHERE topic_id=2

Update:

When I alter the chaset i.e makin cp1256 first then utf8, the field text becomes like the following and it also wrong:

Update 2:

Using the following in the application viewtopic.php solve the problem in the browser's window:

'TOPIC_TITLE'   =>  iconv( "UTF-8","Windows-1256//TRANSLIT", utf8_encode($topic_data['topic_title']))

However, what would this indicate in-order to solve this issue from the database field itself?