PHP: 20 Lessons to Successful Web Development

Working with Arithmetic Operators

To view the accompanying video for this lesson, please visit mhprofessional.com/nixonphp/.

In the previous lesson, you saw a few examples of operators in action, such as the + operator used for addition, the . operator for concatenating strings together, the – operator used for subtraction, and the = operator used for assigning values.

   But PHP supports many more operators than that, such as *, /, and more. It also includes functions you can draw on for more advanced expression evaluation, such as sin(), sqrt() ...