get_current_user_id()

Get the current user’s ID

Return

(int) The current user's ID, or 0 if no user is logged in.

Source

File: wp-includes/user.php 

function get_current_user_id() {
	if ( ! function_exists( 'wp_get_current_user' ) )
		return 0;
	$user = wp_get_current_user();
	return ( isset( $user->ID ) ? (int) $user->ID : 0 );
}

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Related

Uses

Uses
Uses Description
wp-includes/pluggable.php: wp_get_current_user()

Retrieve the current user object.

Used By

Used By
Used By Description
wp-includes/deprecated.php: wp_admin_bar_dashboard_view_site_menu()

Add the “Dashboard”/”Visit Site” menu.
wp-includes/deprecated.php: is_blog_user()

Checks if the current user belong to a given site.
wp-includes/customize/class-wp-customize-nav-menu-item-setting.php: WP_Customize_Nav_Menu_Item_Setting::value_as_wp_post_nav_menu_item()

Get the value emulated into a WP_Post and set up as a nav_menu_item.
wp-includes/script-loader.php: wp_default_scripts()

Register all ClassicPress scripts.
wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php: WP_REST_Comments_Controller::create_item_permissions_check()

Checks if a given request has access to create a comment.
wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php: WP_REST_Comments_Controller::check_read_permission()

Checks if the comment can be read.
wp-includes/rest-api/endpoints/class-wp-rest-comments-controller.php: WP_REST_Comments_Controller::check_edit_permission()

Checks if a comment can be edited or deleted.
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::get_item_permissions_check()

Checks if a given request has access to read a user.
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::get_current_item()

Retrieves the current user.
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::update_current_item_permissions_check()

Checks if a given request has access to update the current user.
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::update_current_item()

Updates the current user.
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::delete_current_item_permissions_check()

Checks if a given request has access to delete the current user.
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::delete_current_item()

Deletes the current user.
wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::check_role_update()

Determines if the current user is allowed to make the desired roles change.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::prepare_item_for_database()

Prepares a single post for create or update.
wp-includes/widgets/class-wp-widget-text.php: WP_Widget_Text::render_control_template_scripts()

Render form template scripts.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::create_item_permissions_check()

Checks if a given request has access to create a post.
wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::update_item_permissions_check()

Checks if a given request has access to update a post.
wp-includes/class-wp-query.php: WP_Query::get_posts()

Retrieve the posts based on query variables.
wp-includes/pluggable.php: wp_notify_postauthor()

Notify an author (and/or others) of a comment/trackback/pingback on a post.
wp-includes/pluggable.php: wp_clear_auth_cookie()

Removes all of the cookies associated with authentication.
wp-includes/comment.php: wp_check_comment_flood()

Checks whether comment flooding is occurring.
wp-includes/admin-bar.php: wp_admin_bar_wp_menu()

Add the ClassicPress logo menu.
wp-includes/admin-bar.php: wp_admin_bar_my_account_item()

Add the “My Account” item.
wp-includes/admin-bar.php: wp_admin_bar_my_account_menu()

Add the “My Account” submenu items.
wp-includes/class-wp-admin-bar.php: WP_Admin_Bar::initialize()
wp-includes/link-template.php: get_dashboard_url()

Retrieves the URL to the user’s dashboard.
wp-includes/link-template.php: get_edit_profile_url()

Retrieves the URL to the user’s profile editor.
wp-includes/link-template.php: get_adjacent_post()

Retrieves the adjacent post.
wp-includes/link-template.php: get_edit_user_link()

Retrieves the edit user link.
wp-includes/capabilities.php: is_super_admin()

Determine if user is a site admin.
wp-includes/ms-deprecated.php: is_site_admin()

Determine if user is a site admin.
wp-includes/user.php: wp_destroy_all_sessions()

Remove all session tokens for the current user from the database.
wp-includes/user.php: new_user_email_admin_notice()

Adds an admin notice alerting the user to check for confirmation request email after email address change.
wp-includes/user.php: wp_get_all_sessions()

Retrieve a list of sessions for the current user.
wp-includes/user.php: wp_destroy_current_session()

Remove the current session token from the database.
wp-includes/user.php: wp_destroy_other_sessions()

Remove all but the current session token for the current user for the database.
wp-includes/user.php: setup_userdata()

Set up global user vars.
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: get_user_option()

Retrieve user option that can be either per Site or per Network.
wp-includes/option.php: wp_user_settings()

Saves and restores user interface settings stored in a cookie.
wp-includes/option.php: get_all_user_settings()

Retrieve all user interface settings.
wp-includes/option.php: wp_set_all_user_settings()

Private. Set all user interface settings.
wp-includes/option.php: delete_all_user_settings()

Delete the user settings of the current user.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::_publish_changeset_values()

Publish changeset values.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::handle_dismiss_autosave_or_lock_request()

Delete a given auto-draft changeset or the autosave revision for a given changeset or delete changeset lock.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::customize_pane_settings()

Print JavaScript settings for parent window.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::get_changeset_posts()

Get changeset posts.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::changeset_data()

Get changeset data.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::save_changeset_post()

Save the post for the loaded changeset.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::set_changeset_lock()

Marks the changeset post as being currently edited by the current user.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::refresh_changeset_lock()

Refreshes changeset lock with the current time if current user edited the changeset before.
wp-includes/post.php: get_posts_by_author_sql()

Retrieve the post SQL based on capability, author, and type.
wp-includes/post.php: wp_insert_post()

Insert or update a post.
wp-includes/post.php: _count_posts_cache_key()

Return the cache key for wp_count_posts() based on the passed arguments.
wp-includes/post.php: wp_count_posts()

Count number of posts of a post type and if user has permissions to view.
wp-includes/revision.php: wp_restore_post_revision()

Restores a post to the specified revision.
wp-includes/comment-template.php: wp_list_comments()

List comments.
wp-admin/includes/class-wp-screen.php: WP_Screen::render_meta_boxes_preferences()

Render the meta boxes preferences.
wp-admin/includes/class-wp-media-list-table.php: WP_Media_List_Table::display_rows()
wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::__construct()

Constructor.
wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::prepare_items()
wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::get_views()
wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::single_row()
wp-admin/includes/plugin-install.php: install_plugins_favorites_form()

Show a username form for the favorites page
wp-admin/includes/bookmark.php: wp_insert_link()

Inserts/updates links into/in the database.
wp-admin/includes/ajax-actions.php: wp_ajax_save_wporg_username()

Ajax handler for saving the user’s WordPress.org username.
wp-admin/includes/ajax-actions.php: wp_ajax_save_user_color_scheme()

Ajax handler for auto-saving the selected color scheme for a user’s own profile.
wp-admin/includes/ajax-actions.php: wp_ajax_destroy_sessions()

Ajax handler for destroying multiple open sessions for a user.
wp-admin/includes/ajax-actions.php: wp_ajax_wp_remove_post_lock()

Ajax handler for removing a post lock.
wp-admin/includes/ajax-actions.php: wp_ajax_dismiss_wp_pointer()

Ajax handler for dismissing a ClassicPress pointer.
wp-admin/includes/ajax-actions.php: wp_ajax_update_welcome_panel()

Ajax handler for updating whether to display the welcome panel.
wp-admin/includes/ajax-actions.php: wp_ajax_inline_save()

Ajax handler for Quick Edit saving a post from a list table.
wp-admin/includes/class-wp-internal-pointers.php: WP_Internal_Pointers::enqueue_scripts()

Initializes the new feature pointers.
wp-admin/includes/user.php: edit_user()

Edit user settings based on contents of $_POST
wp-admin/includes/post.php: wp_check_post_lock()

Check to see if the post is currently being edited by another user.
wp-admin/includes/post.php: wp_set_post_lock()

Mark the post as currently being edited by the current user
wp-admin/includes/post.php: wp_create_post_autosave()

Creates autosave data for the specified post from $_POST data.
wp-admin/includes/post.php: post_preview()

Saves a draft or manually autosaves for the purpose of showing a post preview.
wp-admin/includes/post.php: wp_autosave()

Save a post submitted with XHR
wp-admin/includes/post.php: wp_edit_attachments_query_vars()

Get the query variables for the current attachments request.
wp-admin/includes/post.php: _wp_translate_postdata()

Rename $_POST data from form names to DB post columns.
wp-admin/includes/post.php: edit_post()

Update an existing post with values provided in $_POST.
wp-admin/includes/dashboard.php: wp_dashboard_quick_press()

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

Show recent drafts of the user on the dashboard.
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: choose_primary_blog()

Handles the display of choosing a user’s primary site.
wp-admin/includes/class-wp-users-list-table.php: WP_Users_List_Table::single_row()

Generate HTML for a single row on the users.php admin panel.
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Changelog

Changelog
Version Description
WP-MU Introduced. (3.0.0)