CAGR PHP script [solved]

PHP
1

I just put this together for anyone needing to do CAGR calculations.

Here is the function:

function CAGR($start_year, $end_year, $start_amount, $end_amount){
	
	$total_years =  $end_year - $start_year; 

	echo pow(($end_amount/$start_amount),(1/$total_years))-1;
}

And here is a working file:

<?php

$start_year = $_POST['start_year'];
$end_year = $_POST['end_year'];
$start_amount = $_POST['start_amount'];
$end_amount = $_POST['end_amount'];

function CAGR($start_year, $end_year, $start_amount, $end_amount){
	
	$total_years =  $end_year - $start_year; 

	echo pow(($end_amount/$start_amount),(1/$total_years))-1;
}

if($_POST){
	
echo "CAGR = ";
echo CAGR($start_year, $end_year, $start_amount, $end_amount);

} else {
	
?>	
<p>
	<form action='index.php' method='post'>
		start year: <input name='start_year' type='text'><br>
		start amount: <input name='start_amount' type='text'><br><br>
		
		end year <input name='end_year' type='text'><br>
		end amount <input name='end_amount' type='text'><br><br><br>
		
		<input type='submit' value='calculate CAGR'>
	</form>
	
<?php
}
?>

Hope it helps someone :slight_smile: