}
db_connect($dbhost, $dbuser, $dbpass, $dbdb);
// what's the action?
$curraction = $_REQUEST['action'];
$id = $_REQUEST['id'];
if ($curraction == 'del') {
$id = $_REQUEST['id'];
if ($id > 0) {
course::delCourse($id);
$message = "Class ID {$id} deleted successfully.";
}
}
// if they want to add a class...
if ($curraction == 'add') {
// check for errors first
if (course::courseExists(generateCodeFromData($_REQUEST['department'], $_REQUEST['number'], $_REQUEST['section'], $_REQUEST['semester'], $_REQUEST['year']))) {
error("A class with that code already exists.");
}
if (!ereg("^[a-zA-Z0-9\\._\\-]{1,}\$", $_REQUEST['external_id'])) {
error("You must enter an external ID. Only combination of charactors \"a-z\" and \"A-Z\", numbers, and the charactors '-_.' are allowed.");
}
if (!ereg("^[a-zA-Z]{1,}\$", $_REQUEST['department'])) {
error("You must enter a department. Only charactors \"a-z\" and \"A-Z\" are allowed.");
}
if (!ereg("^[0-9]{1,}\$", $_REQUEST['number'])) {
error("You must enter a numeric number.");
}
if (!ereg("^[a-zA-Z]{0,}\$", $_REQUEST['section'])) {
error("Your course section must be letters \"a-z\" and \"A-Z\" only");
}
if (!array_key_exists($_REQUEST['semester'], $cfg['semesters'])) {
