image editing within form

We are a web development company. We have a form that submits using PHP to a MySQL database. This is a vehicle accident report form, in which the user submits information about the vehicle accident. We need an addition to this form that allows the user to illustrate the accident. To achieve this, we need an item added into this form that allows the user to drag and drop and rotate icons for the driver's car, other vehicles, traffic light, tree and an other obstacle (representing anything else not provided as an icon). see attached the blank diagram that the user will be able to drag and drop these icons on top of. The resulting information is to be done in a format that we can submit using PHP into the MySQL database and then extract to be viewed by the admin. We will do this part of the work but you must include the code to do this to illustrate what you deliver works.