Simple PHP Photo Tagging : Store photo image tags in a MySQL database

This class can store photo image tags in a MySQL database.

It manages a MySQL database with table records for a list of pictures and tags that associate a given name with a section of a picture identified by the tag coordinates in the picture.

The class can add a new image tag, remove an existing tag, search image tags by tag name or by picture and return HTML to render marks of the tag inside the picture.