### PHP arithmetic operators

Today we will lear about aritmetic operators for PHP.

These are the arithmetic operators, below also a simple example, using the sum operator, to perform a simple sum of three numbers.

 Operation Example Result Sum \$a + \$b The sum of a and b Substraction \$a - \$b Difference of a and b Multiplication \$a * \$b Product of a and b Division \$a / \$b Quotient of a and b Modulus \$a % \$b Remainder

### Examples of Arithmetic operators

Let’s see a little example of some PHP coding to use some of these operators.

```<html>
<title>Arithmetic Operators for PHP</title>
<Body>
<form name="form1" method="post" action "example.php">
sum1 <input name="sum1" type="text"><br>
sum2 <input name="sum2" type="text"><br>
sum3 <input name="sum3" type="text"><br>
<input type="submit" name="submit" value="Sum"><br>
</form>
<?php
\$sum1=\$_POST['sum1'];
\$sum2=\$_POST['sum2'];
\$sum3=\$_POST['sum3'];
\$total_sum=\$sum1+\$sum2+\$sum3;
echo \$total_sum;
?>
&lt/body>
&lt/html>
```

The result is a page with three boxes, where the numbers to be added should be filled, then press the sum button, the result will be printed in the screen.