2.5. Operators

PHP, like many other programming languages, provides a number of operators that allow you to manipulate data. These operators fall into several categories; this book walks you through taking advantage of the following operators:

  • Arithmetic Operators: These perform basic mathematical functions

  • Arithmetic Assignment Operators: These set expression values

  • Comparison Operators: These determine the similarity of two values

  • Error Control Operators: These special operators to suppress errors

  • Incrementing/Decrementing Operators: These increase or decrease a value

  • Logical Operators: These denote logical operations; examples include AND and OR

  • String Operators: These manipulate strings

2.5.1. Arithmetic Operators

The arithmetic operators in ...

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