get_current_blog_id()

Retrieve the current site ID.

Description

Return

(int) Site ID.

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Source

File: wp-includes/load.php 

function get_current_blog_id() {
	global $blog_id;
	return absint( $blog_id );
}

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Changelog

Version Description
3.1.0 Introduced.

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Uses

Uses Description
wp-includes/functions.php: absint()

Convert a value to non-negative integer.

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Used By

Used By Description
wp-includes/ms-site.php: wp_initialize_site()

Runs the initialization routine for a given site.
wp-includes/ms-site.php: wp_uninitialize_site()

Runs the uninitialization routine for a given site.
wp-includes/ms-site.php: wp_is_site_initialized()

Checks whether a site is initialized.
wp-includes/embed.php: get_oembed_response_data_for_url()

Retrieves the oEmbed response data for a given URL.
wp-includes/class-wp-user.php: WP_User::for_site()

Sets the site to operate on. Defaults to the current site.
wp-includes/class-wp-roles.php: WP_Roles::get_roles_data()

Gets the available roles data.
wp-includes/class-wp-roles.php: WP_Roles::for_site()

Sets the site to operate on. Defaults to the current site.
wp-includes/functions.php: get_main_site_id()

Gets the main site ID.
wp-includes/ms-blogs.php: clean_site_details_cache()

Cleans the site details cache for a site.
wp-includes/ms-site.php: get_site()

Retrieves site data given a site ID or site object.
wp-includes/general-template.php: has_custom_logo()

Determines whether the site has a custom logo.
wp-includes/general-template.php: get_custom_logo()

Returns a custom logo, linked to home.
wp-includes/functions.php: _wp_upload_dir()

A non-filtered, non-cached version of wp_upload_dir() that doesn’t check the path.
wp-includes/user.php: wp_get_users_with_no_role()

Get the user IDs of all users with no role on this site.
wp-includes/class-wp-user-query.php: WP_User_Query::fill_query_vars()

Fills in missing query variables with default values.
wp-includes/customize/class-wp-customize-nav-menu-setting.php: WP_Customize_Nav_Menu_Setting::filter_nav_menu_options()

Filters the nav_menu_options option to include this menu’s auto_add preference.
wp-includes/customize/class-wp-customize-nav-menu-setting.php: WP_Customize_Nav_Menu_Setting::value()

Get the instance data for a given widget setting.
wp-includes/customize/class-wp-customize-nav-menu-setting.php: WP_Customize_Nav_Menu_Setting::preview()

Handle previewing the setting.
wp-includes/customize/class-wp-customize-nav-menu-setting.php: WP_Customize_Nav_Menu_Setting::filter_wp_get_nav_menus()

Filters the wp_get_nav_menus() result to ensure the inserted menu object is included, and the deleted one is removed.
wp-includes/customize/class-wp-customize-nav-menu-setting.php: WP_Customize_Nav_Menu_Setting::filter_wp_get_nav_menu_object()

Filters the wp_get_nav_menu_object() result to supply the previewed menu object.
wp-includes/customize/class-wp-customize-nav-menu-item-setting.php: WP_Customize_Nav_Menu_Item_Setting::value()

Get the instance data for a given nav_menu_item setting.
wp-includes/customize/class-wp-customize-nav-menu-item-setting.php: WP_Customize_Nav_Menu_Item_Setting::preview()

Handle previewing the setting.
wp-includes/general-template.php: get_site_icon_url()

Returns the Site Icon URL.
wp-includes/class-wp-customize-setting.php: WP_Customize_Setting::is_current_blog_previewed()

Return true if the current site is not the same as the previewed site.
wp-admin/includes/ms.php: _access_denied_splash()

Displays an access denied message when a user tries to view a site’s dashboard they do not have access to.
wp-admin/includes/ms.php: wpmu_delete_blog()

Delete a site.
wp-admin/includes/dashboard.php: wp_dashboard_quick_press()

The Quick Draft widget display and creation of drafts.
wp-admin/includes/upgrade.php: wp_upgrade()

Runs WordPress Upgrade functions.
wp-admin/includes/user.php: wp_delete_user()

Remove user and optionally reassign posts and links to another user.
wp-admin/includes/class-wp-themes-list-table.php: WP_Themes_List_Table::no_items()
wp-admin/includes/ajax-actions.php: wp_ajax_autocomplete_user()

Ajax handler for user autocomplete.
wp-includes/class-wp-user.php: WP_User::get_role_caps()

Retrieves all of the capabilities of the roles of the user, and merges them with individual user capabilities.
wp-includes/cache.php: WP_Object_Cache::__construct()

Sets up object properties; PHP 5 style constructor.
wp-includes/deprecated.php: get_users_of_blog()

Get users for the site.
wp-includes/class-wp-theme.php: WP_Theme::get_allowed_on_site()

Returns array of stylesheet names of themes allowed on the site.
wp-includes/load.php: wp_start_object_cache()

Start the WordPress object cache.
wp-includes/functions.php: is_main_site()

Determine whether a site is the main site of the current network.
wp-includes/functions.php: wp_upload_dir()

Returns an array containing the current upload directory’s path and URL.
wp-includes/link-template.php: get_dashboard_url()

Retrieves the URL to the user’s dashboard.
wp-includes/class-wp-admin-bar.php: WP_Admin_Bar::initialize()
wp-includes/admin-bar.php: wp_admin_bar_site_menu()

Add the “Site Name” menu.
wp-includes/class-wp-customize-setting.php: WP_Customize_Setting::preview()

Add filters to supply the setting’s value when accessed.
wp-includes/user.php: get_blogs_of_user()

Get the sites a user belongs to.
wp-includes/user.php: is_user_member_of_blog()

Find out whether a user is a member of a given blog.
wp-includes/user.php: count_users()

Count number of users who have each of the user roles.
wp-includes/user.php: wp_dropdown_users()

Create dropdown HTML content of users.
wp-includes/ms-deprecated.php: is_user_option_local()

Check whether a usermeta key has to do with the current blog.
wp-includes/ms-functions.php: add_existing_user_to_blog()

Add a user to a blog based on details from maybe_add_existing_user_to_blog().
wp-includes/ms-functions.php: update_blog_public()

Update this blog’s ‘public’ setting in the global blogs table.
wp-includes/ms-functions.php: get_active_blog_for_user()

Get one of a user’s active blogs
wp-includes/ms-blogs.php: switch_to_blog()

Switch the current blog.
wp-includes/ms-blogs.php: restore_current_blog()

Restore the current blog, after calling switch_to_blog().
wp-includes/ms-blogs.php: refresh_blog_details()

Clear the blog details cache.
wp-includes/ms-blogs.php: get_blog_option()

Retrieve option value for a given blog id based on name of option.
wp-includes/ms-blogs.php: add_blog_option()

Add a new option for a given blog id.
wp-includes/ms-blogs.php: delete_blog_option()

Removes option by name for a given blog id. Prevents removal of protected WordPress options.
wp-includes/ms-blogs.php: update_blog_option()

Update an option for a particular blog.
wp-includes/ms-blogs.php: wpmu_update_blogs_date()

Update the last_updated field for the current site.
wp-includes/ms-blogs.php: get_blog_details()

Retrieve the details for a blog from the blogs table and blog options.
wp-includes/ms-default-constants.php: ms_upload_constants()

Defines Multisite upload constants.
wp-includes/script-loader.php: wp_just_in_time_script_localization()

Load localized data on print rather than initialization.