Arithmetic Operators

PHP operators are very similar to C and JavaScript operators, if you know these languages, operators will be familiar and easy to recognize.

These are the operators that can be applied to variables and numeric constants.

Operator	Name	Example	Description
+	Addition	5 + 6	Adds two numbers
-	Subtraction	7 - 9	Subtracts two numbers
*	Multiplication	6 * 3	Multiplies two numbers
/	Division	4 / 8	Divides two numbers
%	Modulus	7 % 2	Returns the remainder from dividing both numbers, in this example the result is 1.
++	Increment	$a++	Adds 1 to the content of a variable.
--	Decrement	$a--	Subtracts 1 to the content of a variable.

<html>
<head>
 <title>PHP Example</title>
</head>
<body>
<?php
 $a = 8;
 $b = 3;
 echo $a + $b," ";
 echo $a - $b," ";
 echo $a * $b," ";
 echo $a / $b," ";
 $a++;
 echo $a," ";
 $b--;
 echo $b," ";
?>
</body>
</html>

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