Why is it important to separate processing and output in PHP according to the EVA principle?

Separating processing and output in PHP according to the EVA (Extract, Validate, and Assign) principle is important for maintaining clean and organized code. By separating these concerns, it makes the code easier to read, understand, and maintain. It also promotes reusability and helps prevent mixing business logic with presentation logic. 

// Processing
$data = processData($_POST['input']);

// Output
echo $data;

function processData($input) {
    // Validate input
    // Process data
    // Assign processed data to a variable
    return $processedData;
}

Keywords

EVA principle PHP separation of concerns MVC architecture security vulnerabilities

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