I have this error again:\[quote\] Notice: Undefined index: IDNUMBER in E:\wamp\www\PHP\create.php on line 5\[/quote\]Here is my code:\[code\] <?php include 'E:\wamp\www\PHP\connection.php'; $IDNUMBER = $_POST['IDNUMBER']; $LNAME = $_POST['LNAME']; $FNAME = $_POST['FNAME']; $MNAME = $_POST['MNAME']; $GRADEYR = $_POST['GRADEYR']; $ADDRESS = $_POST['ADDRESS']; if(!$_POST['submit']) { echo "please fill out the form"; header('E:\wamp\www\PHP\main.php'); } else { mysql_query("INSERT INTO students(`IDNUMBER`,`LNAME`,`FNAME`,`MNAME`,`GRADEYR`,`ADDRESS`) VALUES (NULL, '$IDNUMBER', '$LNAME', '$FNAME', '$MNAME', '$GRADEYR', '$ADDRESS')") or die(mysql_error()); echo "User has been added!"; header('E:\wamp\www\PHP\main.php'); } ?>\[/code\]Here is my main.php:\[code\] <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> </head> <?php include 'E:\wamp\www\PHP\connection.php'; $query = "SELECT * FROM students"; $result = mysql_query($query); while($students = mysql_fetch_array($result)) { echo "<h3>".$students['LNAME'] ."</H3>"; } ?> <h1>Create A user</h1> <form action="create.php" method="post"> Idnumber:<input type="text" name="LName" value="" /> LastName:<input type="text" name="LName" value="" /> Firstname:<input type="text" name="FName" value="" /> Middlename:<input type="text" name="MName" value="" /> GradeOrYear:<input type="text" name="GradeOrYear" value="" /> Address:<input type="text" name="Address" value="" /> <br/> <input type="submit" name="Submit" value="" /> </form> <body> </body> </html>\[/code\]And my connection.php:\[code\] <?php $dbhost = 'localhost'; $dbuser= 'root'; $dbpass= ''; $dbname = 'koro'; $conn =mysql_connect($dbhost, $dbuser, $dbpass); mysql_select_db($dbname); ?>\[/code\]*Where am I supposed to define the undefined in here?