Definition: In mathematics, an exponent is used to take a number and multiply it by itself a certian a number of times. For example 4^5 (four to the power of five) would be 4*4*4*4*4, or 1024. We can do the same thing in PHP using the pow () function. It is written as pow(base, power) ; Our previous example of 4^5 would be written as pow (4, 5) ;
Examples:
<?php
echo pow(5, 3) ;
echo "<br>";
echo pow(-3, 3) ;
echo "<br>";
echo pow(2, 4) ;
?> 125
-27
16
