Using WordPress ‘is_network_admin()’ PHP function
Determines whether the current request is for the network administrative interface.
Network
Using WordPress ‘is_main_site()’ PHP function
Determines whether a site is the main site of the current network.
Using WordPress ‘is_main_network()’ PHP function
Determines whether a network is the main network of the Multisite installation.
Using WordPress ‘install_network()’ PHP function
The `install_network()` function in WordPress is used to install a new network for a WordPress multisite installation
Using WordPress ‘install_global_terms()’ PHP function
The `install_global_terms()` function is a built-in WordPress function that installs global terms used across the entire WordPress multisite network
Using WordPress ‘insert_blog()’ PHP function
The `insert_blog()` function is a WordPress PHP function that allows users to create new sites by storing basic site information in the blogs table and returning the new blog's ID
Using WordPress ‘get_user_option()’ PHP function
Retrieves user option that can be either per Site or per Network.
Using WordPress ‘get_user_count()’ PHP function
Returns the number of active users in your installation.
Using WordPress ‘is_email_address_unsafe()’ PHP function
The is_email_address_unsafe() WordPress PHP function checks an email address against a list of banned domains. Usage is_email_address_unsafe( $user_email ) Example: Input: is_email_address_unsafe('[email protected]') Output: false (if 'example.com' is not in the…