WordPress基于用户角色权限区分不同的功能

// conditional function based on ID / role / capabilities
function so_custom_dash() {
    $user_id = get_current_user_id();
    if ($user_id == 1) {
        // is one specific admin role
        // Show This
    } elseif (!current_user_can('administrator')) {
        // is not the administrator
        // Show That
    } elseif (!current_user_can('manage_options')) {
        // cannot manage options
    } else {
        //rest can see everything they can in that role
    }
}
add_action('admin_head', 'so_custom_dash');
// needs to be used in combination with another function, for example: disable-sidebar-menus-4functions.php OR remove-dashboard-widgets.php
// REMOVE DASHBOARD MENUS FOR CERTAIN USERS - http://wordpress.stackexchange.com/questions/20942/allow-user-access-to-dashboard-only/20943#20943
// DOES NOT ENTIRELY WORK AND ONLY HIDES...
function so_hide_menu_items() {
    global $submenu;
    global $menu;
    global $user_ID;
    if( $user_ID ) :
    /* Dashboard only acccess */
    $user_id = get_current_user_id();
    if ($user_id == 2) :
                    $restricted = array(
                        __('Links'),
                        __('Comments'),
                        __('Appearance'),
                        __('Plugins'),
                        __('Tools'),
                        __('Settings')
                );
    endif;
    endif;
    end ( $menu );
    while ( prev( $menu ) ) :
            $value = explode( ' ', $menu[key($menu)][0] );
    if( in_array( $value[0] != NULL?$value[0]:"" , $restricted ) ) :
                unset( $menu[key($menu)] );
    endif;
    endwhile;
}
add_action('admin_head', 'so_hide_menu_items');