What are the best practices for organizing functions and calculations in a separate file in PHP?

When working on a PHP project, it is a good practice to organize functions and calculations in a separate file to improve code readability and maintainability. This can be achieved by creating a separate PHP file specifically for functions and including it in your main PHP file using the `require_once` or `include_once` statement. 

// functions.php
<?php

function calculateSum($num1, $num2) {
    return $num1 + $num2;
}

function calculateProduct($num1, $num2) {
    return $num1 * $num2;
}

// main.php
<?php

require_once 'functions.php';

$num1 = 10;
$num2 = 5;

$sum = calculateSum($num1, $num2);
$product = calculateProduct($num1, $num2);

echo "Sum: $sum, Product: $product";

Keywords

functions calculations separate file organization PHP

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