What are some best practices for securely implementing conditional display of elements based on database values in PHP?

When implementing conditional display of elements based on database values in PHP, it is important to ensure that the data is properly sanitized to prevent SQL injection attacks. One best practice is to retrieve the database value, validate it, and then use it in your conditional statement to display or hide elements accordingly. Additionally, consider using prepared statements or ORM libraries to interact with the database securely.

<?php

// Assume $db is your database connection

// Retrieve the database value
$query = "SELECT display_element FROM table WHERE id = :id";
$statement = $db->prepare($query);
$statement->bindParam(':id', $id);
$statement->execute();
$result = $statement->fetch(PDO::FETCH_ASSOC);

// Validate the database value
if ($result && $result['display_element'] == 1) {
    // Display the element
    echo "<div>Element to display</div>";
} else {
    // Hide the element
}

?>