# Compound Interest Calculation Script

Compound Interest Calculation Script is used to find the future value of a sum of money, given a fixed interest rate.

## Demo :

 Present Value : Int Rate : Num Periods :

## Example :

Present Value : 100000
Interest rate per compounding period : 8
Number of compounding periods : 6

Following code is Compound Interest Calculation Script core code if you need to copy and use to your website.

<?php
\$Present_Value = 100000;
\$Int_Rate = 8;
\$Num_Periods = 6;

\$Future_Value = round(\$Present_Value * pow(1 + (\$Int_Rate/100),\$Num_Periods), 2);
echo "\$Present_Value @ \$Int_Rate % over \$Num_Periods periods becomes \$Future_Value";
?>

The formula to calculate the future value (F) of a particular amount (P), given a fixed interest rate (r) and a fixed number of years (n) is F = P(1 + r/100)n. Performing the calculation in PHP is a simple matter of turning this formula into executable code. Nevertheless, you'd be surprised how many novice programmers forget all about PHP's operator precedence rules and, as a result, generate incorrect results. The previous listing uses braces to correctly define the order in which the variables are processe