What are best practices for structuring PHP code to handle complex financial calculations with dependencies on previous results?

When dealing with complex financial calculations that depend on previous results, it is best to break down the calculations into smaller, modular functions that can be easily tested and reused. By structuring the code in a way that separates concerns and reduces dependencies, it becomes easier to manage and debug the calculations. 

<?php

function calculateInterest($principal, $rate, $time) {
    return $principal * $rate * $time;
}

function calculateTotalAmount($principal, $rate, $time) {
    $interest = calculateInterest($principal, $rate, $time);
    return $principal + $interest;
}

$principal = 1000;
$rate = 0.05;
$time = 2;

$totalAmount = calculateTotalAmount($principal, $rate, $time);

echo "Total amount after interest: $" . $totalAmount;

?>

Keywords

PHP financial calculations dependencies code structuring error handling

Related Questions