Hello. I have form that contains an input field (Screen) whose name contains an upper-case letter.
So when sent the query is composed as:Code HTML4Strict:<html> <head></head> <body> <form action="http://localhost/example.php" method="get" name="form" id="form"> <input value="medium" name="Screen" id="screen"/> <button name="upload" type="submit">Upload</button> </form> </body> </html>
http://localhost/example.php?Screen=medium&upload=
Although it works without problem, I want to ask that an upper-case in query string is valid or not?
Thanks.

