What are the advantages of thinking in terms of functions rather than files when designing PHP applications?

When designing PHP applications, thinking in terms of functions rather than files allows for better organization, reusability, and maintainability of code. Functions help break down complex tasks into smaller, more manageable chunks, making it easier to debug and enhance the application in the future. 

// Example of using functions to organize code in PHP application

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

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

// Calling the functions
$sum = calculateSum(5, 3);
$product = calculateProduct(5, 3);

echo "Sum: " . $sum . "<br>";
echo "Product: " . $product . "<br>";

Keywords

functions files PHP applications advantages design

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