How can the code be refactored to improve readability and maintainability in PHP?

The code can be refactored by breaking it down into smaller, more manageable functions, using meaningful variable names, and adding comments to explain the purpose of each section. This will improve readability and maintainability of the code. 

// Original code
function calculateArea($length, $width) {
    $area = $length * $width;
    return $area;
}

$length = 10;
$width = 5;
$area = calculateArea($length, $width);
echo "The area is: $area";

// Refactored code
function calculateArea($length, $width) {
    return $length * $width;
}

$length = 10;
$width = 5;
$area = calculateArea($length, $width);
echo "The area is: $area";

Keywords

refactoring readability maintainability PHP functions code optimization

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