Chapter 12. Other Services
This chapter could be described as a rag bag of miscellaneous services, but they are all significant in the construction of a CMS. Adding services to the framework in a standard way considerably eases the development of specific systems. Dealing with XML, handling configurations for extensions, and manipulating sets of parameters are all loosely related services that have obvious uses, especially given that XML provides a simple, robust, and widely applicable technique for handling information.
File and directory handling is best treated as a service rather than being implemented in an ad hoc fashion using PHP functions, partly because of the complex permissions issues that can easily arise. Also, common operations are repeatedly needed, such as finding all the files in a directory that match a certain pattern.
Most systems need WYSIWYG editing in order to satisfy user expectations, and the sending of e-mail is often a requirement.
The most complex section of this...
