Title: Multisite | Page 5 of 11 | Developer.WordPress.org --- # @package: Multisite * hook[network_site_users_created_user](https://developer.wordpress.org/reference/hooks/network_site_users_created_user/) * Fires after a user has been created via the network site-users.php page. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/network_site_users_created_user/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/network_site_users_created_user/#uses) | Source: [wp-admin/network/site-users.php:88](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/site-users.php#L88-L88) * function[network_settings_add_js()](https://developer.wordpress.org/reference/functions/network_settings_add_js/) * Prints JavaScript in the header on the Network Settings screen. * Used by [0 functions](https://developer.wordpress.org/reference/functions/network_settings_add_js/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/functions/network_settings_add_js/#uses) | Source: [wp-admin/includes/ms.php:1007](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L1007-L1024) * function[_update_posts_count_on_delete()](https://developer.wordpress.org/reference/functions/_update_posts_count_on_delete/) * Handler for updating the current site’s posts count when a post is deleted. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_update_posts_count_on_delete/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/_update_posts_count_on_delete/#uses) | Source: [wp-includes/ms-blogs.php:890](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-blogs.php#L890-L896) * function[_update_posts_count_on_transition_post_status()](https://developer.wordpress.org/reference/functions/_update_posts_count_on_transition_post_status/) * Handler for updating the current site’s posts count when a post status changes. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_update_posts_count_on_transition_post_status/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/_update_posts_count_on_transition_post_status/#uses) | Source: [wp-includes/ms-blogs.php:908](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-blogs.php#L908-L922) * function[avoid_blog_page_permalink_collision()](https://developer.wordpress.org/reference/functions/avoid_blog_page_permalink_collision/) * Avoids a collision between a site slug and a permalink slug. * Used by [0 functions](https://developer.wordpress.org/reference/functions/avoid_blog_page_permalink_collision/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/avoid_blog_page_permalink_collision/#uses) | Source: [wp-admin/includes/ms.php:722](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L722-L752) * function[choose_primary_blog()](https://developer.wordpress.org/reference/functions/choose_primary_blog/) * Handles the display of choosing a user’s primary site. * Used by [0 functions](https://developer.wordpress.org/reference/functions/choose_primary_blog/#used-by) | Uses [8 functions](https://developer.wordpress.org/reference/functions/choose_primary_blog/#uses) | Source: [wp-admin/includes/ms.php:762](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L762-L806) * function[can_edit_network()](https://developer.wordpress.org/reference/functions/can_edit_network/) * Determines whether or not this network from this page can be edited. * Used by [1 function](https://developer.wordpress.org/reference/functions/can_edit_network/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/can_edit_network/#uses) | Source: [wp-admin/includes/ms.php:819](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L819-L835) * hook[can_edit_network](https://developer.wordpress.org/reference/hooks/can_edit_network/) * Filters whether this network can be edited from this page. * Used by [1 function](https://developer.wordpress.org/reference/hooks/can_edit_network/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/can_edit_network/#uses) | Source: [wp-admin/includes/ms.php:834](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L834-L834) * function[_thickbox_path_admin_subfolder()](https://developer.wordpress.org/reference/functions/_thickbox_path_admin_subfolder/) * Prints thickbox image paths for Network Admin. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_thickbox_path_admin_subfolder/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/_thickbox_path_admin_subfolder/#uses) | Source: [wp-admin/includes/ms.php:844](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L844-L850) * hook[lang_codes](https://developer.wordpress.org/reference/hooks/lang_codes/) * Filters the language codes. * Used by [1 function](https://developer.wordpress.org/reference/hooks/lang_codes/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/lang_codes/#uses) | Source: [wp-admin/includes/ms.php:550](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L550-L550) * function[_access_denied_splash()](https://developer.wordpress.org/reference/functions/_access_denied_splash/) * Displays an access denied message when a user tries to view a site’s dashboard they do not have access to. * Used by [0 functions](https://developer.wordpress.org/reference/functions/_access_denied_splash/#used-by) | Uses [12 functions](https://developer.wordpress.org/reference/functions/_access_denied_splash/#uses) | Source: [wp-admin/includes/ms.php:561](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L561-L606) * function[check_import_new_users()](https://developer.wordpress.org/reference/functions/check_import_new_users/) * Checks if the current user has permissions to import new users. * Used by [0 functions](https://developer.wordpress.org/reference/functions/check_import_new_users/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/check_import_new_users/#uses) | Source: [wp-admin/includes/ms.php:616](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L616-L618) * function[mu_dropdown_languages()](https://developer.wordpress.org/reference/functions/mu_dropdown_languages/) * Generates and displays a drop-down of available languages. * Used by [0 functions](https://developer.wordpress.org/reference/functions/mu_dropdown_languages/#used-by) | Uses [6 functions](https://developer.wordpress.org/reference/functions/mu_dropdown_languages/#uses) | Source: [wp-admin/includes/ms.php:629](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L629-L669) * hook[mu_dropdown_languages](https://developer.wordpress.org/reference/hooks/mu_dropdown_languages/) * Filters the languages available in the dropdown. * Used by [1 function](https://developer.wordpress.org/reference/hooks/mu_dropdown_languages/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/mu_dropdown_languages/#uses) | Source: [wp-admin/includes/ms.php:666](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L666-L666) * function[site_admin_notice()](https://developer.wordpress.org/reference/functions/site_admin_notice/) * Displays an admin notice to upgrade all sites after a core upgrade. * Used by [0 functions](https://developer.wordpress.org/reference/functions/site_admin_notice/#used-by) | Uses [6 functions](https://developer.wordpress.org/reference/functions/site_admin_notice/#uses) | Source: [wp-admin/includes/ms.php:681](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L681-L708) * hook[wpmu_drop_tables](https://developer.wordpress.org/reference/hooks/wpmu_drop_tables/) * Filters the tables to drop when the site is deleted. * Used by [1 function](https://developer.wordpress.org/reference/hooks/wpmu_drop_tables/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_drop_tables/#uses) | Source: [wp-includes/ms-site.php:832](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-site.php#L832-L832) * hook[wpmu_delete_blog_upload_dir](https://developer.wordpress.org/reference/hooks/wpmu_delete_blog_upload_dir/) * Filters the upload base directory to delete when the site is deleted. * Used by [1 function](https://developer.wordpress.org/reference/hooks/wpmu_delete_blog_upload_dir/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_delete_blog_upload_dir/#uses) | Source: [wp-includes/ms-site.php:846](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-site.php#L846-L846) * function[wpmu_delete_user()](https://developer.wordpress.org/reference/functions/wpmu_delete_user/) * Deletes a user and all of their posts from the network. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wpmu_delete_user/#used-by) | Uses [14 functions](https://developer.wordpress.org/reference/functions/wpmu_delete_user/#uses) | Source: [wp-admin/includes/ms.php:145](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L145-L214) * hook[wpmu_delete_user](https://developer.wordpress.org/reference/hooks/wpmu_delete_user/) * Fires before a user is deleted from the network. * Used by [1 function](https://developer.wordpress.org/reference/hooks/wpmu_delete_user/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_delete_user/#uses) | Source: [wp-admin/includes/ms.php:174](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L174-L174) * function[upload_is_user_over_quota()](https://developer.wordpress.org/reference/functions/upload_is_user_over_quota/) * Checks whether a site has used its allotted upload space. * Used by [5 functions](https://developer.wordpress.org/reference/functions/upload_is_user_over_quota/#used-by) | Uses [5 functions](https://developer.wordpress.org/reference/functions/upload_is_user_over_quota/#uses) | Source: [wp-admin/includes/ms.php:225](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L225-L248) * function[display_space_usage()](https://developer.wordpress.org/reference/functions/display_space_usage/) * Displays the amount of disk space used by the current site. Not used in core. * Used by [0 functions](https://developer.wordpress.org/reference/functions/display_space_usage/#used-by) | Uses [4 functions](https://developer.wordpress.org/reference/functions/display_space_usage/#uses) | Source: [wp-admin/includes/ms.php:255](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L255-L270) * function[fix_import_form_size()](https://developer.wordpress.org/reference/functions/fix_import_form_size/) * Gets the remaining upload space for this site. * Used by [0 functions](https://developer.wordpress.org/reference/functions/fix_import_form_size/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/fix_import_form_size/#uses) | Source: [wp-admin/includes/ms.php:280](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L280-L286) * function[upload_space_setting()](https://developer.wordpress.org/reference/functions/upload_space_setting/) * Displays the site upload space quota setting form on the Edit Site Settings screen. * Used by [0 functions](https://developer.wordpress.org/reference/functions/upload_space_setting/#used-by) | Uses [5 functions](https://developer.wordpress.org/reference/functions/upload_space_setting/#uses) | Source: [wp-admin/includes/ms.php:295](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L295-L320) * function[refresh_user_details()](https://developer.wordpress.org/reference/functions/refresh_user_details/) * Cleans the user cache for a specific user. * Used by [0 functions](https://developer.wordpress.org/reference/functions/refresh_user_details/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/refresh_user_details/#uses) | Source: [wp-admin/includes/ms.php:330](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L330-L341) * function[format_code_lang()](https://developer.wordpress.org/reference/functions/format_code_lang/) * Returns the language for a language code. * Used by [1 function](https://developer.wordpress.org/reference/functions/format_code_lang/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/format_code_lang/#uses) | Source: [wp-admin/includes/ms.php:352](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L352-L552) * hook[delete_blog](https://developer.wordpress.org/reference/hooks/delete_blog/) * Fires before a site is deleted. * Used by [2 functions](https://developer.wordpress.org/reference/hooks/delete_blog/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/delete_blog/#uses) | Source: [wp-includes/ms-site.php:252](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-site.php#L252-L252) * function[check_upload_size()](https://developer.wordpress.org/reference/functions/check_upload_size/) * Determines whether uploaded file exceeds space quota. * Used by [0 functions](https://developer.wordpress.org/reference/functions/check_upload_size/#used-by) | Uses [6 functions](https://developer.wordpress.org/reference/functions/check_upload_size/#uses) | Source: [wp-admin/includes/ms.php:18](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L18-L53) * function[wpmu_delete_blog()](https://developer.wordpress.org/reference/functions/wpmu_delete_blog/) * Deletes a site. * Used by [0 functions](https://developer.wordpress.org/reference/functions/wpmu_delete_blog/#used-by) | Uses [13 functions](https://developer.wordpress.org/reference/functions/wpmu_delete_blog/#uses) | Source: [wp-admin/includes/ms.php:64](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L64-L126) * hook[wpmu_update_blog_options](https://developer.wordpress.org/reference/hooks/wpmu_update_blog_options/) * Fires after the site options are updated. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_update_blog_options/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_update_blog_options/#uses) | Source: [wp-admin/network/site-settings.php:60](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/site-settings.php#L60-L60) * hook[wpmueditblogaction](https://developer.wordpress.org/reference/hooks/wpmueditblogaction/) * Fires at the end of the Edit Site form, before the submit button. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/wpmueditblogaction/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/wpmueditblogaction/#uses) | Source: 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