Question

get_userdata( int $user_id )

Retrieve user info by user ID.

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description

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参数

$user_id

(int) (Required) User ID

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返回值

(WP_User|false) WP_User object on success, false on failure.

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源代码

File: wp-includes/pluggable.php

function get_userdata( $user_id ) {
	return get_user_by( 'id', $user_id );
}

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更新日志

Version	description
0.71	Introduced.

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相关函数

Uses

• wp-includes/pluggable.php: get_user_by()

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Used By

• wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::get_user()
• wp-includes/rest-api/endpoints/class-wp-rest-users-controller.php: WP_REST_Users_Controller::delete_item()
• wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php: WP_REST_Posts_Controller::prepare_item_for_database()
• wp-includes/embed.php: get_oembed_response_data()
• wp-admin/includes/class-wp-posts-list-table.php: WP_Posts_List_Table::column_title()
• wp-includes/class-wp-query.php: WP_Query::setup_postdata()
• wp-admin/includes/ajax-actions.php: wp_ajax_destroy_sessions()
• wp-admin/includes/export.php: wxr_authors_list()
• wp-admin/includes/deprecated.php: get_editable_user_ids()
• wp-includes/capabilities.php: grant_super_admin()
• wp-includes/capabilities.php: revoke_super_admin()
• wp-admin/includes/ms.php: refresh_user_details()
• wp-admin/includes/misc.php: wp_check_locked_posts()
• wp-admin/includes/misc.php: wp_refresh_post_lock()
• wp-admin/includes/user.php: default_password_nag_edit_user()
• wp-admin/includes/user.php: edit_user()
• wp-admin/includes/user.php: get_user_to_edit()
• wp-admin/includes/class-wp-users-list-table.php: WP_Users_List_Table::single_row()
• wp-admin/includes/post.php: wp_check_post_lock()
• wp-admin/includes/post.php: _admin_notice_post_locked()
• wp-admin/includes/ajax-actions.php: wp_ajax_wp_fullscreen_save_post()
• wp-admin/includes/ajax-actions.php: wp_ajax_add_user()
• wp-admin/includes/ajax-actions.php: wp_ajax_inline_save()
• wp-admin/includes/ms.php: confirm_delete_users()
• wp-includes/capabilities.php: author_can()
• wp-includes/capabilities.php: user_can()
• wp-includes/capabilities.php: is_super_admin()
• wp-includes/pluggable.php: wp_new_user_notification()
• wp-includes/pluggable.php: wp_notify_postauthor()
• wp-includes/pluggable.php: wp_notify_moderator()
• wp-includes/pluggable.php: wp_generate_auth_cookie()
• wp-includes/deprecated.php: user_can_create_post()
• wp-includes/deprecated.php: user_can_create_draft()
• wp-includes/deprecated.php: user_can_edit_post()
• wp-includes/deprecated.php: user_can_set_post_date()
• wp-includes/deprecated.php: user_can_edit_post_date()
• wp-includes/deprecated.php: user_can_edit_user()
• wp-includes/class-wp.php: WP::register_globals()
• wp-includes/class-wp-query.php: WP_Query::get_queried_object()
• wp-includes/link-template.php: get_edit_user_link()
• wp-includes/link-template.php: get_permalink()
• wp-includes/user.php: wp_update_user()
• wp-includes/user.php: check_password_reset_key()
• wp-includes/user.php: wp_insert_user()
• wp-includes/user.php: is_user_member_of_blog()
• wp-includes/user.php: setup_userdata()
• wp-includes/user.php: wp_dropdown_users()
• wp-includes/user.php: get_user_option()
• wp-includes/canonical.php: redirect_canonical()
• wp-includes/ms-functions.php: wpmu_welcome_user_notification()
• wp-includes/ms-functions.php: wpmu_log_new_registrations()
• wp-includes/ms-functions.php: newuser_notify_siteadmin()
• wp-includes/ms-functions.php: wpmu_welcome_notification()
• wp-includes/ms-functions.php: add_user_to_blog()
• wp-includes/ms-functions.php: remove_user_from_blog()
• wp-includes/author-template.php: get_the_author_meta()
• wp-includes/author-template.php: get_author_posts_url()
• wp-includes/author-template.php: wp_list_authors()
• wp-includes/author-template.php: get_the_modified_author()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::mw_getPost()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::mw_getRecentPosts()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::mw_newPost()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_getUser()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::wp_getProfile()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::_prepare_page()
• wp-includes/class-wp-xmlrpc-server.php: wp_xmlrpc_server::_insert_post()
• wp-includes/comment-template.php: get_comment_class()
• wp-includes/comment-template.php: get_comment_author()
• wp-includes/comment.php: wp_allow_comment()
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User Contributed Notes

1. Skip to note content You must log in to vote on the helpfulness of this noteVote results for this note: 1You must log in to vote on the helpfulness of this note Contributed by Codex

   Basic Usage
   The get_userdata() function returns an object of the user’s data. You can echo various parts of the returned object or loop through the data to display it all.

   Example displaying certain parts:

   
   <?php $user_info = get_userdata(1);
         echo 'Username: ' . $user_info->user_login . "\n";
         echo 'User roles: ' . implode(', ', $user_info->roles) . "\n";
         echo 'User ID: ' . $user_info->ID . "\n";
   ?>
   

   Results in:

   Username: admin
   User roles: administrator
   User ID: 1

   You can also assign certain parts into individual variables for displaying later or in multiple places.

   Example for extracting certain parts:

   
   <?php $user_info = get_userdata(1);
         $username = $user_info->user_login;
         $first_name = $user_info->first_name;
         $last_name = $user_info->last_name;
         echo "$first_name $last_name logs into her WordPress site with the user name of $username.";
   ?>
   

   Results in:

   Harriet Smith logs into her WordPress site with the user name of mrssmith.

Accessing Usermeta Data

<?php $user_info = get_userdata(1);
      echo $user_info->last_name .  ", " . $user_info->first_name . "\n";
?>

Results in:

Doe, John