Each class contains instance variables and instance methods. Some of these variables and methods are available for customization, some are internal to the classes themselves. All are documented, but tampering with internal variables and methods is not supported. Internal interfaces are subject to change without notice from one version of the library to another.
This section covers PHPLIB core functionality in reference form. Classes are presented in order of dependency, though, because the core structure is easier understood in this order. You will need to understand the complete core structure to successfully use all of PHPLIB's features.