PHP - short for Hypertext Preprocessor - is a popular server side scripting language that can be embedded into HTML to create a wide variety of mini-applications, or used on its own to build large-scale sites and complex business applications.
The PMBOK - short for "Guide to the Project Management Body of Knowledge" - is a project management guide, and the globally recognized gold-standard for the practice of project management. The PMBOK Guide applies to all projectized industries, including technology, construction, software, engineering and more. The current version - and the edition used by PMI to guide its certification program - is the PMBOK Guide Fourth Edition.
A practicum is a college course, usually in a specialized field of study, where students practice their skills in the field and under the supervision of an active practitioner.