is_user_logged_in()

Checks if the current visitor is a logged in user.

Return

(bool) True if user is logged in, false if not logged in.

Source

File: wp-includes/pluggable.php 

function is_user_logged_in() {
	$user = wp_get_current_user();

	return $user->exists();
}

Expand Source Code View on GitHub

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-signup.php: validate_another_blog_signup()

Validate a new site signup.
wp-signup.php: show_blog_form()

Generates and displays the Signup and Create Site forms
wp-signup.php: validate_blog_form()

Validate the new site signup
wp-includes/general-template.php: wp_heartbeat_settings()

Default settings for heartbeat
wp-includes/general-template.php: wp_enqueue_code_editor()

Enqueue assets needed by the code editor for the given settings.
wp-includes/general-template.php: user_can_richedit()

Whether the user can access the visual editor.
wp-includes/general-template.php: wp_register()

Display the Registration or Admin link.
wp-includes/general-template.php: wp_loginout()

Display the Log In/Out link.
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::create_item()

Creates a comment.
wp-includes/rest-api/class-wp-rest-server.php: WP_REST_Server::serve_request()

Handles serving an API request.
wp-includes/class-wp-customize-widgets.php: WP_Customize_Widgets::wp_ajax_update_widget()

Updates widget settings asynchronously.
wp-includes/class-wp-query.php: WP_Query::parse_search()

Generates SQL for the WHERE clause based on passed search terms.
wp-includes/class-wp-query.php: WP_Query::get_posts()

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

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

Determine whether the admin bar should be showing.
wp-includes/admin-bar.php: wp_admin_bar_site_menu()

Add the “Site Name” menu.
wp-includes/admin-bar.php: wp_admin_bar_my_sites_menu()

Add the “My Sites/[Site Name]” menu and all submenus.
wp-includes/class-wp-admin-bar.php: WP_Admin_Bar::initialize()
wp-includes/class-wp-admin-bar.php: WP_Admin_Bar::_render()
wp-includes/link-template.php: get_adjacent_post()

Retrieves the adjacent post.
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::setup_theme()

Start preview and customize theme.
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()

Handle customize_save WP Ajax request to save/update a changeset.
wp-includes/class-wp-customize-manager.php: WP_Customize_Manager::handle_changeset_trash_request()

Handle request to trash a changeset.
wp-includes/post-template.php: get_body_class()

Retrieve the classes for the body element as an array.
wp-includes/rest-api.php: rest_cookie_check_errors()

Checks for errors when using cookie-based authentication.
wp-includes/rest-api.php: rest_authorization_required_code()

Returns a contextual HTTP error code for authorization failure.
wp-includes/rest-api.php: rest_send_cors_headers()

Sends Cross-Origin Resource Sharing headers with API requests.
wp-includes/post.php: get_posts_by_author_sql()

Retrieve the post SQL based on capability, author, and type.
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/class-wp.php: WP::send_headers()

Sends additional HTTP headers for caching, content type, etc.
wp-includes/comment-template.php: wp_list_comments()

List comments.
wp-includes/comment-template.php: comment_form()

Outputs a complete commenting form for use within a template.
wp-includes/comment-template.php: get_comment_reply_link()

Retrieve HTML content for reply to comment link.
wp-includes/comment-template.php: get_post_reply_link()

Retrieve HTML content for reply to post link.
wp-includes/functions.php: wp_auth_check()

Check whether a user is still logged in, for the heartbeat.
wp-includes/functions.php: wp_auth_check_load()

Load the auth check for monitoring whether the user is still logged in.
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.
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Changelog

Changelog
Version Description
WP-2.0.0 Introduced.