What are the potential pitfalls when using PHP to post messages on Facebook, especially in terms of privacy settings?

When using PHP to post messages on Facebook, one potential pitfall is inadvertently sharing sensitive information due to incorrect privacy settings. To avoid this, ensure that you explicitly set the privacy settings for each post to the desired level (e.g., public, friends only, custom list).

// Set the privacy settings for the post
$privacy = array(
    'value' => 'SELF' // Change this to the desired privacy level
);

// Post the message with the specified privacy settings
$response = $fb->post('/me/feed', array('message' => 'Hello, world!', 'privacy' => $privacy), $accessToken);