note 57488 rejected from function.mysql-query by betz

Note Submitter: sfowler39 at yahoo dot com ---- Can someone help me understand what I am doing wrong here in my code? I am trying to make a form that if you put in a email address in the form and hit submit it will either produce one of two things, say it exists im my database or you dont exist in my database. I am missing something here and I cant find it. // The form: <form method="POST" action="custompage2.php"> Search Word: <input type="text" name="query"> <input type="SUBMIT" value="Search!"> </form> <?php include("db.php"); // gets the phpmaker db file ?> <? // PHP Search Script $conn = phpmkr_db_connect(HOST, USER, PASS, DB, PORT); $sql = mysql_query("SELECT address FROM web2") or die (mysql_error());//looks in the db for the email address while(list($address)=mysql_fetch_array($sql)){ if ( $address == $sql ) { echo "Your in the database"; } else { echo "Your not in the database"; } } ?> Thank you.