Title: Multisite | Page 6 of 11 | Developer.WordPress.org --- # @package: Multisite * 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: [wp-admin/network/site-settings.php:200](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/site-settings.php#L200-L200) * hook[activate_blog](https://developer.wordpress.org/reference/hooks/activate_blog/) * Fires after a network site has its deletion flag removed. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/activate_blog/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/activate_blog/#uses) | Source: [wp-admin/network/sites.php:294](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/sites.php#L294-L294) * hook[deactivate_blog](https://developer.wordpress.org/reference/hooks/deactivate_blog/) * Fires before a network site is flagged for deletion. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/deactivate_blog/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/deactivate_blog/#uses) | Source: [wp-admin/network/sites.php:305](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/sites.php#L305-L305) * hook[network_sites_updated_message_{$_GET[‘updated’]}](https://developer.wordpress.org/reference/hooks/network_sites_updated_message__getupdated/) * Filters a specific, non-default site-updated message in the Network admin. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/network_sites_updated_message__getupdated/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/network_sites_updated_message__getupdated/#uses) | Source: [wp-admin/network/sites.php:319](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/sites.php#L319-L319) * 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:858](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/includes/ms.php#L858-L1000) * hook[wpmuadminedit](https://developer.wordpress.org/reference/hooks/wpmuadminedit/) * Fires just before the action handler in several Network Admin screens. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/wpmuadminedit/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/wpmuadminedit/#uses) | Source: [wp-admin/network/edit.php:28](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/edit.php#L28-L28) * hook[mu_menu_items](https://developer.wordpress.org/reference/hooks/mu_menu_items/) * Filters available network-wide administration menu options. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/mu_menu_items/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/mu_menu_items/#uses) | Source: [wp-admin/network/settings.php:503](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/settings.php#L503-L503) * hook[wpmu_options](https://developer.wordpress.org/reference/hooks/wpmu_options/) * Fires at the end of the Network Settings form, before the submit button. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_options/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_options/#uses) | Source: [wp-admin/network/settings.php:535](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/settings.php#L535-L535) * hook[show_network_site_users_add_existing_form](https://developer.wordpress.org/reference/hooks/show_network_site_users_add_existing_form/) * Filters whether to show the Add Existing User form on the Multisite Users screen. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/show_network_site_users_add_existing_form/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/show_network_site_users_add_existing_form/#uses) | Source: [wp-admin/network/site-users.php:232](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/site-users.php#L232-L232) * hook[network_site_users_after_list_table](https://developer.wordpress.org/reference/hooks/network_site_users_after_list_table/) * Fires after the list table on the Users screen in the Multisite Network Admin. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/network_site_users_after_list_table/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/network_site_users_after_list_table/#uses) | Source: [wp-admin/network/site-users.php:331](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/site-users.php#L331-L331) * hook[show_network_site_users_add_new_form](https://developer.wordpress.org/reference/hooks/show_network_site_users_add_new_form/) * Filters whether to show the Add New User form on the Multisite Users screen. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/show_network_site_users_add_new_form/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/show_network_site_users_add_new_form/#uses) | Source: [wp-admin/network/site-users.php:371](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/site-users.php#L371-L371) * hook[redirect_network_admin_request](https://developer.wordpress.org/reference/hooks/redirect_network_admin_request/) * Filters whether to redirect the request to the Network Admin. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/redirect_network_admin_request/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/redirect_network_admin_request/#uses) | Source: [wp-admin/network/admin.php:29](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/admin.php#L29-L29) * hook[after_mu_upgrade](https://developer.wordpress.org/reference/hooks/after_mu_upgrade/) * Fires after the Multisite DB upgrade for each site is complete. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/after_mu_upgrade/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/after_mu_upgrade/#uses) | Source: [wp-admin/network/upgrade.php:114](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/upgrade.php#L114-L114) * hook[wpmu_upgrade_site](https://developer.wordpress.org/reference/hooks/wpmu_upgrade_site/) * Fires after each site has been upgraded. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_upgrade_site/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_upgrade_site/#uses) | Source: [wp-admin/network/upgrade.php:123](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/upgrade.php#L123-L123) * hook[wpmu_upgrade_page](https://developer.wordpress.org/reference/hooks/wpmu_upgrade_page/) * Fires before the footer on the network upgrade screen. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_upgrade_page/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/wpmu_upgrade_page/#uses) | Source: [wp-admin/network/upgrade.php:153](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/upgrade.php#L153-L153) * hook[update_wpmu_options](https://developer.wordpress.org/reference/hooks/update_wpmu_options/) * Fires after the network options are updated. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/update_wpmu_options/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/update_wpmu_options/#uses) | Source: [wp-admin/network/settings.php:132](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/network/settings.php#L132-L132) * hook[delete_site_email_content](https://developer.wordpress.org/reference/hooks/delete_site_email_content/) * Filters the text for the email sent to the site admin when a request to delete a site in a Multisite network is submitted. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/delete_site_email_content/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/delete_site_email_content/#uses) | Source: [wp-admin/ms-delete-site.php:89](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/ms-delete-site.php#L89-L89) * hook[myblogs_allblogs_options](https://developer.wordpress.org/reference/hooks/myblogs_allblogs_options/) * Fires before the sites list on the My Sites screen. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/myblogs_allblogs_options/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/myblogs_allblogs_options/#uses) | Source: [wp-admin/my-sites.php:107](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/my-sites.php#L107-L107) * hook[myblogs_options](https://developer.wordpress.org/reference/hooks/myblogs_options/) * Filters the settings HTML markup in the Global Settings section on the My Sites screen. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/myblogs_options/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/myblogs_options/#uses) | Source: [wp-admin/my-sites.php:124](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/my-sites.php#L124-L124) * hook[myblogs_blog_actions](https://developer.wordpress.org/reference/hooks/myblogs_blog_actions/) * Filters the row links displayed for each site on the My Sites screen. * Used by [0 functions](https://developer.wordpress.org/reference/hooks/myblogs_blog_actions/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/myblogs_blog_actions/#uses) | Source: [wp-admin/my-sites.php:153](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-admin/my-sites.php#L153-L153) * function[wp_update_network_site_counts()](https://developer.wordpress.org/reference/functions/wp_update_network_site_counts/) * Updates the network-wide site count. * Used by [2 functions](https://developer.wordpress.org/reference/functions/wp_update_network_site_counts/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/wp_update_network_site_counts/#uses) | Source: [wp-includes/ms-functions.php:2549](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-functions.php#L2549-L2567) * function[wp_update_network_user_counts()](https://developer.wordpress.org/reference/functions/wp_update_network_user_counts/) * Updates the network-wide user count. * Used by [2 functions](https://developer.wordpress.org/reference/functions/wp_update_network_user_counts/#used-by) | Uses [1 function](https://developer.wordpress.org/reference/functions/wp_update_network_user_counts/#uses) | Source: [wp-includes/ms-functions.php:2578](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-functions.php#L2578-L2580) * function[get_space_used()](https://developer.wordpress.org/reference/functions/get_space_used/) * Returns the space used by the current site. * Used by [4 functions](https://developer.wordpress.org/reference/functions/get_space_used/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/get_space_used/#uses) | Source: [wp-includes/ms-functions.php:2589](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-functions.php#L2589-L2605) * hook[pre_get_space_used](https://developer.wordpress.org/reference/hooks/pre_get_space_used/) * Filters the amount of storage space used by the current site, in megabytes. * Used by [1 function](https://developer.wordpress.org/reference/hooks/pre_get_space_used/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/pre_get_space_used/#uses) | Source: [wp-includes/ms-functions.php:2597](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-functions.php#L2597-L2597) * function[get_space_allowed()](https://developer.wordpress.org/reference/functions/get_space_allowed/) * Returns the upload quota for the current blog. * Used by [7 functions](https://developer.wordpress.org/reference/functions/get_space_allowed/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/get_space_allowed/#uses) | Source: [wp-includes/ms-functions.php:2614](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-functions.php#L2614-L2633) * hook[get_space_allowed](https://developer.wordpress.org/reference/hooks/get_space_allowed/) * Filters the upload quota for the current site. * Used by [1 function](https://developer.wordpress.org/reference/hooks/get_space_allowed/#used-by) | Uses [0 functions](https://developer.wordpress.org/reference/hooks/get_space_allowed/#uses) | Source: [wp-includes/ms-functions.php:2632](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-functions.php#L2632-L2632) * function[get_upload_space_available()](https://developer.wordpress.org/reference/functions/get_upload_space_available/) * Determines if there is any upload space left in the current blog’s quota. * Used by [5 functions](https://developer.wordpress.org/reference/functions/get_upload_space_available/#used-by) | Uses [3 functions](https://developer.wordpress.org/reference/functions/get_upload_space_available/#uses) | Source: [wp-includes/ms-functions.php:2642](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-functions.php#L2642-L2659) * function[is_upload_space_available()](https://developer.wordpress.org/reference/functions/is_upload_space_available/) * Determines if there is any upload space left in the current blog’s quota. * Used by [4 functions](https://developer.wordpress.org/reference/functions/is_upload_space_available/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/is_upload_space_available/#uses) | Source: [wp-includes/ms-functions.php:2667](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-functions.php#L2667-L2673) * function[upload_size_limit_filter()](https://developer.wordpress.org/reference/functions/upload_size_limit_filter/) * Filters the maximum upload file size allowed, in bytes. * Used by [0 functions](https://developer.wordpress.org/reference/functions/upload_size_limit_filter/#used-by) | Uses [2 functions](https://developer.wordpress.org/reference/functions/upload_size_limit_filter/#uses) | Source: [wp-includes/ms-functions.php:2683](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-functions.php#L2683-L2692) * function[wp_is_large_network()](https://developer.wordpress.org/reference/functions/wp_is_large_network/) * Determines whether or not we have a large network. * Used by [7 functions](https://developer.wordpress.org/reference/functions/wp_is_large_network/#used-by) | Uses [5 functions](https://developer.wordpress.org/reference/functions/wp_is_large_network/#uses) | Source: [wp-includes/ms-functions.php:2707](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/ms-functions.php#L2707-L2736) [Previous Page](https://developer.wordpress.org/reference/package/multisite/page/5/?output_format=md) [1](https://developer.wordpress.org/reference/package/multisite/?output_format=md)… [4](https://developer.wordpress.org/reference/package/multisite/page/4/?output_format=md) [5](https://developer.wordpress.org/reference/package/multisite/page/5/?output_format=md) 6 [7](https://developer.wordpress.org/reference/package/multisite/page/7/?output_format=md) [8](https://developer.wordpress.org/reference/package/multisite/page/8/?output_format=md)… 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