How can PHP developers improve code readability and maintainability for beginners?

To improve code readability and maintainability for beginners, PHP developers can follow best practices such as using meaningful variable names, commenting code effectively, breaking down complex tasks into smaller functions, and adhering to coding standards like PSR-1 and PSR-2.

// Example of improved code readability and maintainability
function calculateArea($length, $width) {
    // Calculate the area of a rectangle
    $area = $length * $width;
    
    return $area;
}

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