What are the best practices for implementing user-specific pages in a CMS like Typo3 using PHP?

When implementing user-specific pages in a CMS like Typo3 using PHP, it is important to create a dynamic template that displays content based on the logged-in user. This can be achieved by checking the user's session or user ID and querying the database for user-specific content.

// Check if user is logged in
if(isset($_SESSION['user_id'])){
    // Get user ID
    $user_id = $_SESSION['user_id'];
    
    // Query database for user-specific content
    $query = "SELECT * FROM user_pages WHERE user_id = $user_id";
    $result = mysqli_query($connection, $query);
    
    // Display user-specific content
    while($row = mysqli_fetch_assoc($result)){
        echo $row['content'];
    }
} else {
    echo "Please log in to view this page.";
}