Try to make sure the browser recognizes the page as Unicode.
Generally, this can be done by having your server send the right Content-type
HTTP header, that includes the charset you're using.
For instance, something like this should work :
header('Content-type: text/html; charset=UTF-8');
echo "வெள்ளிக்கிழமை ஐ";
If this works, and your dynamically generated page still doesn't :
- make sure your data in your MySQL database is in UTF-8 too
- this can be set for each table, or even columns, in MySQL
- and make sure you are connecting to it using UTF-8.
Basically, all your application should use the same encoding :
- PHP files,
- Database
- HTTP server