How can functions be utilized in PHP to improve code readability and reusability?

Using functions in PHP can improve code readability and reusability by allowing you to encapsulate specific tasks or operations into named blocks of code that can be easily called and reused throughout your program. This helps to break down complex logic into smaller, more manageable chunks, making your code easier to understand and maintain. 

// Example of using a function to calculate the area of a circle

function calculateCircleArea($radius) {
    return M_PI * $radius * $radius;
}

$radius = 5;
$area = calculateCircleArea($radius);
echo "The area of the circle with radius $radius is: $area";

Keywords

Functions PHP code readability reusability libraries

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