Book Image

The PHP Workshop

By : Jordi Martinez, Alexandru Busuioc, David Carr, Markus Gray, Vijay Joshi, Mark McCollum, Bart McLeod, M A Hossain Tonu
Book Image

The PHP Workshop

By: Jordi Martinez, Alexandru Busuioc, David Carr, Markus Gray, Vijay Joshi, Mark McCollum, Bart McLeod, M A Hossain Tonu

Overview of this book

Do you want to build your own websites, but have never really been confident enough to turn your ideas into real projects? If your web development skills are a bit rusty, or if you've simply never programmed before, The PHP Workshop will show you how to build dynamic websites using PHP with the help of engaging examples and challenging activities. This PHP tutorial starts with an introduction to PHP, getting you set up with a productive development environment. You will write, execute, and troubleshoot your first PHP script using a built-in templating engine and server. Next, you'll learn about variables and data types, and see how conditions and loops help control the flow of a PHP program. Progressing through the chapters, you'll use HTTP methods to turn your PHP scripts into web apps, persist data by connecting to an external database, handle application errors, and improve functionality by using third-party packages. By the end of this Workshop, you'll be well-versed in web application development, and have the knowledge and skills to creatively tackle your own ambitious projects with PHP.
Table of Contents (12 chapters)

Logical Operators

Logical Operators combine Boolean values and result in a new Boolean value. In a Boolean expression, to represent relational logic, we use such operators. There are four of them: not, and, or (the famous notandor trio) and xor (the exclusive or). Consider a fruit analogy again: "I love fruits, except apples." The expression is true if the fruit is not an apple. Hence, to negate a statement, we use the not operator. What about "I love either apples or oranges"? The expression is true if either of the "I love apples" or "I love oranges" statements is true. Hence, we use or to result in boolean true if any condition is true and we use and when both conditions need to be true.

Logical operators can be used to compose multiple expressions into one complex expression. For example, the statement "I love either apples or oranges but not watermelon" can be broken into smaller statements, such as "I love apples,&quot...