WordPress encoding problem

I'm having what seems to be a problem related to WordPress, though it could be something else.

Here's what's happening:

I have a blog with posts using utf-8 characters (simple ones like ’). The characters all display correctly currently, however I'm moving my site to another server and seeing problems with all the utf-8 chars (’ becomes ’).

I first thought the problem was with MySQL, but after looking into it it seems not to be the case. I created the new database by doing a synch with Navicat, and have confirmed that both db's and all tables are utf-8. When viewing the data in either db in any SQL program I've tried (Sequel Pro, Navicat) the chars show up unencoded (’). I've tried various synching methods, including ones that others have said solved encoding problems, but they did not work for me.

What confirmed it for me, was setting up a test php script which pulled a single post_content field from each database. In the test script the chars show up encoded (’) regardless of which db they come from.

I checked the apache config file and found that HTTP_ACCEPT_CHARSET is set to the same (ISO开发者_如何学C-8859-1,utf-8;q=0.7,*;q=0.7) on both systems.

Soooo, I'm left thinking that it's a WordPress issue, though of course I could be wrong.

Any help would be truly appreciated, I’ve been banging my head on this for awhile now ;)

Thanks.

What you are seeing is UTF-8 data being interpreted as if it were ISO-8859-1 (or Win-1252, or another single-byte encoding). Problems like this are almost always a mismatch between the headers being sent to the browser and the actual encoding. Something is telling the browser that the stream is ISO-8859-1 while actually sending UTF-8.

So, I've finally ended up using a plug-in to solve the problem. Here are the steps I took:

1. Migrate the structure and content of the old database to the new database using Navicat for MySQL (though I think any method of copying will work).
2. Change the encoding of the columns in the wp_posts table to utf8 using ALTER TABLE 'wp_posts' CHANGE COLUMN 'post_content' 'post_content' longtext CHARACTER SET utf8 NOT NULL after 'post_date_gmt';
3. Use the ISO to UTF content plug in to convert any non-encoded chars innthe table to utf chars.