Get 'e' raised to the power of different numbers in PHP

Description

The following code shows how to get 'e' raised to the power of different numbers.

Example

//from   ww w.  j  a  v a 2 s . co m
<?php
    echo(exp(0) . "<br>");
    echo(exp(1) . "<br>");
    echo(exp(10) . "<br>");
    echo(exp(4.8));
?>

The code above generates the following result.