© Steve Prettyman 2020
S. PrettymanLearn PHP 8https://doi.org/10.1007/978-1-4842-6240-5_2

2. Interfaces, Platforms, and Three-Tier Programming

Steve Prettyman1 
(1)
Key West, FL, USA
 

As of January 2013, PHP was installed on more than 240 million web sites (39% of those sampled) and 2.1 million web servers.

—Ide, Andy (2013-01-31). “PHP Just Grows and Grows”

Chapter Objectives/Student Learning Outcomes

After completing this chapter, the student will be able to

  • Give examples of platforms or containers that can host PHP programs

  • Create a simple, dynamic web application using PHP

  • Explain three-tier design and determine what is contained in each tier

  • Design a three-tier application

  • Explain each step of the program development life cycle (PDLC)

  • Define and explain ...

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