I am bigginer in php. i want create a small admin section for an institute. i have admin table and students details table in my sql. i know , how to insert and update the data. but in my application there is one dropdown list for student courses.what ever i want to select in that, that only stored in to database. in updating time also if student was change his course then i want to change course name through dropdown. i dont know how to use dropdown. please reply me.