The Math Operators

We'll start with the math operators, which are the most basic of all operators:

`+`	Adds two numbers
`-`	Subtracts one number from another
`*`	Multiplies two numbers together
`/`	Divides one number by another
`%`	Returns the remainder when one number is divided by another (modulus).

You can see them all at work in phpmath.php; here's the PHP:

Example 2-1. Using the `Math` operators, phpmath.php

 <HTML>     <BODY>         <H1>The math operators</H1>         <?php             echo "5 + 2 = ", 5 + 2, "<BR>";             echo "5 - 2 = ", 5 - 2, "<BR>";             echo "5 * 2 = ", 5 * 2, "<BR>";             echo "5 / 2 = ", 5 / 2, "<BR>";             echo "5 % 2 = ", 5 % 2, "<BR>";         ?>     </BODY> </HTML>

The results, all as expected, appear in Figure 2-1.