How to insert capital letters to Mysql?

Question

I want to insert capital letters like:

"User One"

I want to insert to Mysql as : User One

But, apparently, mysql inserted as "user one". How do I insert the capital letters in mysql?

I am using php code to get the name:

$user = mysql_real_escape_string($_POST['user']);

Tested several times, same result. All converted to small letters