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Hello, I am new to PHP and trying to make thelogin page for my admin panel. My login page code is: <?php require_once('dbadmin.php'); $error = ''; $form = $_POST['submit']; $email = $_POST['email']; $password = $_POST['password']; if( isset($form) ) { if( isset($email) && isset($password) && $email !== '' && $password !== '' ) { $sql = mysql_query("SELECT * FROM `marti_admin` WHERE username='$email' and password='$password';"); if( mysql_num_rows($sql) != 0 ) { //success $_SESSION['logged-in'] = true; header('Location: data_insert.php'); exit; } else { $error = "Incorrect login info"; } } else { $error = 'Username/Password Incorrect';} } ?> ///////html code////// But i got these errors ( ! ) Notice: Undefined index: submit in C:\wamp\www\matri\login.php on line 4 Call Stack # Time Memory Function Location 1 0.0014 373944 {main}( ) ..\login.php:0 ( ! ) Notice: Undefined index: email in C:\wamp\www\matri\login.php on line 5 Call Stack # Time Memory Function Location 1 0.0014 373944 {main}( ) ..\login.php:0 ( ! ) Notice: Undefined index: password in C:\wamp\www\matri\login.php on line 6 Call Stack # Time Memory Function Location 1 0.0014 373944 {main}( ) ..\login.php:0 Please help me in removing these errors...