Are there any security considerations to keep in mind when implementing features like adding a page to favorites and setting it as the homepage using PHP?

When implementing features like adding a page to favorites and setting it as the homepage using PHP, it is important to validate user input to prevent malicious code injection or cross-site scripting attacks. Additionally, ensure that the user has the necessary permissions to perform these actions to prevent unauthorized access to sensitive information.

// Validate user input for adding page to favorites
$pageUrl = filter_input(INPUT_POST, 'page_url', FILTER_VALIDATE_URL);
if ($pageUrl) {
    // Add page to favorites logic here
}

// Validate user input for setting page as homepage
$pageId = filter_input(INPUT_POST, 'page_id', FILTER_VALIDATE_INT);
if ($pageId) {
    // Set page as homepage logic here
}