The is_server_error() WordPress PHP function checks if the current response is a server error (HTTP status code 500). Usage $is_error = is_server_error(); Parameters This function does not have any parameters.…

​How to Use the WordPress `is_robots()` Function in Your Theme or Plugin File

Determines whether we are currently on an endpoint that should be protected against WSODs.

Determines whether the query is for the Privacy Policy page.

Determines whether the current request is for the network administrative interface.

Deprecated functionality to determin if the current site is the main site.

Determines whether the current request is for the login screen.

Determines whether the query has resulted in a 404 (returns no results).

​The `install_network()` function in WordPress is used to install a new network for a WordPress multisite installation