add_options_page()函数（options.add）

为WordPress后台 Settings 顶级栏目创建一个子栏目

语法结构

<?php
add_options_page( $page_title, $menu_title, $capability, $menu_slug, $function);
?>

参数

$page_title

$menu_title：菜单名称

$capability：权限

$menu_slug

$function 回调函数

<?php
/** 第1步：定义添加菜单选项的函数 */
function my_plugin_menu() {
     add_options_page( 
        'My Plugin Options', 
        'My Plugin', 
        'manage_options', 
        'my-unique-identifier', 
        'my_plugin_options' );
}

/** 第2步：将函数注册到钩子中 */
add_action( 'admin_menu', 'my_plugin_menu' );

/** 第3步：定义选项被点击时打开的页面 */
//current_user_can()检测当前的用户是否有特定的权限
//wp_die()终断WordPress执行并显示错误HTML信息。
function my_plugin_options() {
     if ( !current_user_can( 'manage_options' ) )  {
          wp_die( 'You do not have sufficient permissions to access this page.' );
     }
     echo '<div class=wrap>Here is where the form would go if I actually had options.</div>';
}
?>

为其他顶级栏目创建子菜单的函数

Dashboard 
<?php add_dashboard_page( $page_title, $menu_title, $capability, $menu_slug, $function); ?>

Posts 
<?php add_posts_page( $page_title, $menu_title, $capability, $menu_slug, $function); ?>

Media 
<?php add_media_page( $page_title, $menu_title, $capability, $menu_slug, $function); ?>

Links 
<?php add_links_page( $page_title, $menu_title, $capability, $menu_slug, $function); ?>

Pages 
<?php add_pages_page( $page_title, $menu_title, $capability, $menu_slug, $function); ?>

Comments 
<?php add_comments_page( $page_title, $menu_title, $capability, $menu_slug, $function); ?>

Appearance 
<?php add_theme_page( $page_title, $menu_title, $capability, $menu_slug, $function); ?>

Plugins 
<?php add_plugins_page( $page_title, $menu_title, $capability, $menu_slug, $function); ?>

Users 
<?php add_users_page( $page_title, $menu_title, $capability, $menu_slug, $function); ?>

Tools 
<?php add_management_page( $page_title, $menu_title, $capability, $menu_slug, $function); ?>