Title: wp-admin/includes/ms.php | Developer.WordPress.org

---

# File: wp-admin/includes/ms.php

 * function[wp_ensure_editable_role()](https://developer.wordpress.org/reference/functions/wp_ensure_editable_role/)
 * Stop execution if the role can not be assigned by the current user.
 * Used by [0 functions](https://developer.wordpress.org/reference/functions/wp_ensure_editable_role/#used-by)
   | Uses [3 functions](https://developer.wordpress.org/reference/functions/wp_ensure_editable_role/#uses)
   | Source: [wp-admin/includes/ms.php:1185](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L1185-L1190)
 * function[get_site_screen_help_tab_args()](https://developer.wordpress.org/reference/functions/get_site_screen_help_tab_args/)
 * Returns the arguments for the help tab on the Edit Site screens.
 * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_site_screen_help_tab_args/#used-by)
   | Uses [2 functions](https://developer.wordpress.org/reference/functions/get_site_screen_help_tab_args/#uses)
   | Source: [wp-admin/includes/ms.php:1148](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L1148-L1163)
 * function[get_site_screen_help_sidebar_content()](https://developer.wordpress.org/reference/functions/get_site_screen_help_sidebar_content/)
 * Returns the content for the help sidebar on the Edit Site screens.
 * Used by [0 functions](https://developer.wordpress.org/reference/functions/get_site_screen_help_sidebar_content/#used-by)
   | Uses [1 function](https://developer.wordpress.org/reference/functions/get_site_screen_help_sidebar_content/#uses)
   | Source: [wp-admin/includes/ms.php:1172](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L1172-L1176)
 * function[network_edit_site_nav()](https://developer.wordpress.org/reference/functions/network_edit_site_nav/)
 * Outputs the HTML for a network’s “Edit Site” tabular interface.
 * Used by [0 functions](https://developer.wordpress.org/reference/functions/network_edit_site_nav/#used-by)
   | Uses [10 functions](https://developer.wordpress.org/reference/functions/network_edit_site_nav/#uses)
   | Source: [wp-admin/includes/ms.php:1045](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L1045-L1139)
 * hook[network_edit_site_nav_links](https://developer.wordpress.org/reference/hooks/network_edit_site_nav_links/)
 * Filters the links that appear on site-editing network pages.
 * Used by [1 function](https://developer.wordpress.org/reference/hooks/network_edit_site_nav_links/#used-by)
   | Uses [0 functions](https://developer.wordpress.org/reference/hooks/network_edit_site_nav_links/#uses)
   | Source: [wp-admin/includes/ms.php:1066](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L1066-L1090)
 * 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:1011](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L1011-L1028)
 * 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:685](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L685-L712)
 * 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:726](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L726-L756)
 * 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:766](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L766-L810)
 * 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:823](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L823-L839)
 * 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:838](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L838-L838)
 * 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:848](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L848-L854)
 * 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/6.9.4/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/6.9.4/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/6.9.4/src/wp-admin/includes/ms.php#L616-L622)
 * 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:633](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L633-L673)
 * 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:670](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L670-L670)
 * 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/6.9.4/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/6.9.4/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/6.9.4/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/6.9.4/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/6.9.4/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/6.9.4/src/wp-admin/includes/ms.php#L352-L552)
 * 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/6.9.4/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/6.9.4/src/wp-admin/includes/ms.php#L174-L174)
 * 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/6.9.4/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/6.9.4/src/wp-admin/includes/ms.php#L64-L126)
 * function[confirm_delete_users()](https://developer.wordpress.org/reference/functions/confirm_delete_users/)
 * Used by [0 functions](https://developer.wordpress.org/reference/functions/confirm_delete_users/#used-by)
   | Uses [16 functions](https://developer.wordpress.org/reference/functions/confirm_delete_users/#uses)
   | Source: [wp-admin/includes/ms.php:862](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-admin/includes/ms.php#L862-L1004)