How can functions be used to improve the organization and efficiency of recurring code blocks in PHP?

Using functions in PHP allows for the creation of reusable code blocks that can be called multiple times throughout a script. This can improve organization by keeping related code together and increase efficiency by reducing the need to write the same code multiple times. By defining functions for recurring tasks, developers can easily make changes or updates to the code in one central location, rather than having to update multiple instances of the same code.

// Example of using a function to improve organization and efficiency of recurring code blocks

// Define a function to calculate the area of a rectangle
function calculateRectangleArea($length, $width) {
    return $length * $width;
}

// Call the function to calculate the area of a rectangle
$area = calculateRectangleArea(5, 10);

echo "The area of the rectangle is: " . $area;