is_user_member_of_blog()
Function: Finds out whether a user is a member of a given blog.
Source: wp-includes/user.php:1078
add_user_meta()
Function: Adds meta data to a user.
Source: wp-includes/user.php:1145
delete_user_meta()
Function: Removes metadata matching criteria from a user.
Source: wp-includes/user.php:1167
count_many_users_posts()
Function: Gets the number of posts written by a list of users.
Source: wp-includes/user.php:619
get_current_user_id()
Function: Gets the current user’s ID.
Source: wp-includes/user.php:655
get_user_option()
Function: Retrieves user option that can be either per Site or per Network.
Source: wp-includes/user.php:682
get_user_option_{$option}
Filter Hook: Filters a specific user option value.
Source: wp-includes/user.php:718
wpdb::tables()
Method: Returns an array of WordPress tables.
Source: wp-includes/class-wpdb.php:1144
wpdb::check_connection()
Method: Checks that the connection to the database is still up. If not, try to reconnect.
Source: wp-includes/class-wpdb.php:2119
wpdb::get_row()
Method: Retrieves one row from the database.
Source: wp-includes/class-wpdb.php:2916