Ubuntu Unleashed 2013 Edition: Covering 12.10 and 13.04, Eighth Edition

Operators

Now that you have data values to work with, you need some operators to use, too. You have already used + to add variables together, but many others in PHP handle arithmetic, comparison, assignment, and other operators. Operator is just a fancy word for something that performs an operation, such as addition or subtraction. However, operand might be new to you. Consider this operation:

$a = $b + c;

In this operation, = and + are operators, and $a, $b, and $c are operands. Along with +, you also already know – (subtract), * (multiply), and / (divide), but Table 39.2 provides some more.

Table 39.2. PHP Operators

At least 10 other operators ...