What are the benefits of separating data processing logic from presentation logic in PHP applications?

Separating data processing logic from presentation logic in PHP applications helps improve code maintainability, readability, and reusability. It also allows for easier testing and debugging of the application. By keeping these concerns separate, it becomes easier to make changes to the data processing without affecting the presentation layer, and vice versa.

// Data processing logic
function processData($data) {
    // Process data here
    return $processedData;
}

// Presentation logic
function displayData($data) {
    // Display data here
}

$data = fetchDataFromDatabase();
$processedData = processData($data);
displayData($processedData);