Datatypes in PHP - Floating points : Tutorial

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