echo "<xml>"; echo "<status>error</status>"; echo "<message>Lesson doesn't exist</message>"; echo "</xml>"; exit; } try { $courseObject = new EfrontCourse($_GET['course']); } catch (Exception $e) { echo "<xml>"; echo "<status>error</status>"; echo "<message>Course doesn't exist</message>"; echo "</xml>"; exit; } if ($courseObject->isCourseLesson($_GET['lesson'])) { $courseObject->removeLessons($_GET['lesson']); echo "<xml>"; echo "<status>ok</status>"; echo "</xml>"; break; } else { echo "<xml>"; echo "<status>error</status>"; echo "<message>Lesson not assigned to the course</message>"; echo "</xml>"; break; } } else { echo "<xml>"; echo "<status>error</status>";