This class can be used to locate and index classes to be auto-loaded when their objects are instantiated.
It searches for PHP classes in files and generates an index file in the INI format with the paths of all the classes that it found, so next time a class needs to be loaded it just needs to look in the generated INI file.
It also provides an auto-load function that looks in the generated INI file entries for the path of the class file to be loaded.