Learn PHP 8: Using MySQL, JavaScript, CSS3, and HTML5

© 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 ...