add_users_page( string $page_title, string $menu_title, string $capability, string $menu_slug, callable $function = ”, int $position = null )

将子菜单页添加到用户/配置文件主菜单。
Add submenu page to the Users/Profile main menu.

说明（Description）

此函数具有用于确定菜单中是否包含页面的功能。

连接以处理页面输出的函数必须检查用户是否也具有所需的功能。

参数（Parameters）

返回（Return）

（string|false）结果页的hook_后缀，如果用户没有所需的功能，则为false。

源码（Source）

/**
 * Add sub menu page to the Users/Profile main menu.
 *
 * This function takes a capability which will be used to determine whether
 * or not a page is included in the menu.
 *
 * The function which is hooked in to handle the output of the page must check
 * that the user has the required capability as well.
 *
 * @param string $page_title The text to be displayed in the title tags of the page when the menu is selected
 * @param string $menu_title The text to be used for the menu
 * @param string $capability The capability required for this menu to be displayed to the user.
 * @param string $menu_slug The slug name to refer to this menu by (should be unique for this menu)
 * @param callback $function The function to be called to output the content for this page.
 *
 * @return false|string The resulting page's hook_suffix, or false if the user does not have the capability required.
 */
function add_users_page( $page_title, $menu_title, $capability, $menu_slug, $function = '' ) {
    if ( current_user_can('edit_users') )
        $parent = 'users.php';
    else
        $parent = 'profile.php';
    return add_submenu_page( $parent, $page_title, $menu_title, $capability, $menu_slug, $function );
}