How can PHP developers effectively handle form processing, cookies, and database interactions when creating a news page with a user interface?

To effectively handle form processing, cookies, and database interactions when creating a news page with a user interface, PHP developers can use a combination of HTML forms for user input, PHP scripts to process form submissions, set cookies for user preferences, and interact with a database to store and retrieve news articles.

// Form Processing
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    // Process form data here
}

// Cookies
$cookie_name = "user_pref";
$cookie_value = "dark_mode";
setcookie($cookie_name, $cookie_value, time() + (86400 * 30), "/"); // Cookie set for 30 days

// Database Interactions
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "news_db";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

// Query database for news articles
$sql = "SELECT * FROM news_articles";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // Output data of each row
    while($row = $result->fetch_assoc()) {
        echo "Title: " . $row["title"]. " - Content: " . $row["content"]. "<br>";
    }
} else {
    echo "0 results";
}

$conn->close();