I hope this question is in the right forum. I figured since the end result is a PHP result it fits here.

I have a normal HTML form. In it are text fields. Some of my customers will be filling the form with Kanji and Katakana characters. The form shows as filling fine, but when submitted, the returning POST values are empty. I have checked all over the web and i just cant seem to find anything about what I'm missing.

I do have meta tag

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">

Any help is much appreciated. Thanks.

Look at accept-charset attribute of form tag.

First do a dump of _REQUEST at the very very beginning of your application and see if your data is there. Server should not care what data u send unless u have some specific security layers in there.

Have you tried using PHPs htmlentities function with your POST
e.g.

<?php

echo htmlentities($_POST['comment'], ENT_QUOTES, 'UTF-8');

?>

http://php.net/manual/en/function.htmlentities.php