What potential pitfalls should be avoided when updating session variables in PHP after database changes?

When updating session variables in PHP after database changes, it is important to ensure that the session data is synchronized with the database to avoid inconsistencies. One potential pitfall to avoid is updating session variables without checking if the database changes have been successfully committed. To solve this issue, you should update the session variables only after confirming that the database changes have been applied successfully. 

// Perform database update
// Check if database update was successful
if ($database_update_successful) {
    // Update session variables
    $_SESSION['user_id'] = $new_user_id;
    $_SESSION['username'] = $new_username;
}

Keywords

session variables PHP database changes update errors

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