Using WordPress ‘get_theme_updates()’ PHP function
The `get_theme_updates()` function in WordPress retrieves a list of themes that have updates available
Using WordPress ‘get_user_by_email()’ PHP function
The `get_user_by_email()` function in WordPress is used to retrieve user information based on their email address
Using WordPress ‘get_the_author_ID()’ PHP function
Retrieve the ID of the author of the current post.
Using WordPress ‘maybe_add_column()’ PHP function
Adds column to a database table, if it doesn’t already exist.