What are the potential pitfalls of combining data retrieval and data display functions in the same code block in PHP?

Combining data retrieval and data display functions in the same code block can lead to a lack of separation of concerns and make the code harder to maintain and debug. It is recommended to separate these functionalities into distinct sections or functions to improve code readability and maintainability. 

// Separating data retrieval and data display functions

// Data retrieval function
function retrieveData() {
    // Retrieve data from database or external source
    return $data;
}

// Data display function
function displayData($data) {
    // Display data in a formatted way
    echo "<ul>";
    foreach ($data as $item) {
        echo "<li>$item</li>";
    }
    echo "</ul>";
}

// Retrieve data
$data = retrieveData();

// Display data
displayData($data);

Keywords

data retrieval data display code block separation of concerns maintainability

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