### 3. __Floating point(double) data type__

Floating points are also known as

*double*,

*float* and

*real numbers.*
Floating points are noting but fractions (decimal numbers), and can be negative as well as positive numbers.

**Examples :**
<?php
$var1 = 0.5;
$var2 = -0.5;
$var3 = 1.2e-10;
$var3 = -1.2e10;
echo $var1."<br>";
echo $var2."<br>";
echo $var3."<br>";
echo $var4."<br>";
?>

Output

0.5
-0.5
-12000000000
-12000000000