query("UPDATE students SET blackboard=blackboard+1 WHERE mnumber=" . trim($_POST['mnumber'])); block("lightgreen", "added blackboard"); } block("black", "add blackboard"); ?>

Matr.nummer:

query("SELECT firstname, lastname, mnumber, blackboard FROM students"); print ""; while ($student = $result->fetch(PDO::FETCH_ASSOC)) { print ""; print ""; print ""; print ""; print ""; print ""; } print "

" . $student['firstname'] . "

" . $student['lastname'] . "

" . $student['mnumber'] . "

" . $student['blackboard'] . "

"; ?>