menu_page_url( string $menu_slug, bool $display = true )

使用示例

• 示例1

  我们可以使用此函数在现有父菜单下添加子菜单。

  // check if parent admin page exist or not.
  $main_menu = menu_page_url('PARENT-PAGE-SLUG', false);
  
  if ($main_menu) {
      // The top menu exists, so add a sub-menu item.
      add_submenu_page(
          'PARENT-PAGE-SLUG',
          esc_html__( 'Sub-Menu Page Title', 'myplugin' ), // page Title
          esc_html__( 'Sub-Menu Page', 'myplugin' ), // menu link text
          'manage_options', // capability to access the page
          'submenu-page-slug', // page URL slug
          'submenu_page_content_callback', // callback function with content
          2 // priority
      );
  } else {
      // No top menu with that slug, we can create it.
      add_menu_page(
          esc_html__( 'Parent Page Title', 'myplugin' ), // page Title
          esc_html__( 'Parent Page', 'myplugin' ), // menu link text
          'manage_options', // capability to access the page
          'parent-page-slug', // page URL slug
          'parent_menu_page_content_callback', // callback function with content
      );
  }