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_5

5. Secured User Interfaces

Steve Prettyman¹ 

(1)

Key West, FL, USA

 

All great ideas look like bad ideas to people who are losers. It's always good to test a new idea with known losers to make sure they don't like it. —Dilbert 11/18/97 (http://dilbert.com/strips/comic/1997-11-18/)

Chapter Objectives/Student Learning Outcomes

After completing this chapter, the student will be able to

• Explain why user input must be validated in the interface and business rules tiers

• Explain why user input must be filtered in the business rules tier

• Use HTML5 code to validate user input

• Use PHP if statements (conditional statements) to validate and filter input

• Use the foreach loops to ...