|wp-includes/pluggable.php: is_user_logged_in()|| |
Determines whether the current visitor is a logged in user.
|wp-includes/general-template.php: user_can_richedit|| |
Filters whether the user can access the visual editor.
|wp-includes/vars.php: wp_is_mobile()|| |
Test if the current browser runs on a mobile device (smart phone, tablet, etc.)
|wp-includes/plugin.php: apply_filters()|| |
Calls the callback functions that have been added to a filter hook.
|wp-includes/user.php: get_user_option()|| |
Retrieve user option that can be either per Site or per Network.