// PHP 5.3 syntax - anonymous functions (Closures)
add_action(\'wp_dashboard_setup\', function(){
    if(current_user_can(\'activate_plugins\')){ // Administrator
        wp_add_dashboard_widget(\'dbwidget-Administrator\', \'#Administrator\', function(){
            // Print widget here
        });
    }elseif(current_user_can(\'delete_others_posts\')){ // Editor
        wp_add_dashboard_widget(\'dbwidget-Editor\', \'#Editor\', function(){
            // Print widget here
        });
    }elseif(current_user_can(\'delete_published_posts\')){ // Author
        wp_add_dashboard_widget(\'dbwidget-Author\', \'#Author\', function(){
            // Print widget here
        });
    }elseif(current_user_can(\'edit_posts\')){ // Contributor
        wp_add_dashboard_widget(\'dbwidget-Contributor\', \'#Contributor\', function(){
            // Print widget here
        });
    }elseif(current_user_can(\'read\')){ // Subscriber
        wp_add_dashboard_widget(\'dbwidget-Subscriber\', \'#Subscriber\', function(){
            // Print widget here
        });
    }
});

正如您所见，我将它们与elseif链接起来，以确保角色顺利降级，因为管理员也可以完成以下所有操作。随心所欲地玩吧。了解更多有关Roles and Capabilities here.