a function question

I am trying to create a function that works with two arguments. the 1st needs to be a suername. The 2nd needs to be an email address. Next, I have to use case conversion functions to capitalize the first letter of the username and convert the email add. to lowercase characters and finaly check that it contains the @ sign. If I can't find the @ character, return false: otherwise, I return an array containing the converted arguments. Here is my code (which I can't get to work): <?php $mail = "FOJOMO@yahoo.com"; $user = "patrick"; function usermail( $user, $mail ) { global $user; global $mail; $user; = ucwords( $user ); // capitalizes the //'p' in patrick $mail; = strtolower( $mail ); // converts all //of FOJOMO into lower case if ( strstr( $mail ), "@" )) { // searches for the '@' sign user_array = explode("-", $user, $mail); // this //function (explode) creates the array } else { print "Please enter a valid e-mail address"; // default if test fails to //find the '@' sign } ?> ===== ---------------- "forget your lust for the rich man's gold. All that you need, is in your soul. You can do this if you try. All that I want for you my son, is to be satisfied" ~ Lynard Skynard