要查看当前阵列键，请尝试以下操作：

add_action( \'admin_menu\' , \'admin_menu_new_items\', 1 );
function admin_menu_new_items() {
    global $submenu;
    wp_die( \'<pre>\' . var_export( $submenu[\'edit.php\'], true ) . \'</pre>\' );
}

我明白了：

array (
  5 => 
  array (
    0 => \'All Posts\',
    1 => \'edit_posts\',
    2 => \'edit.php\',
  ),
  10 => 
  array (
    0 => \'Add New\',
    1 => \'edit_posts\',
    2 => \'post-new.php\',
  ),
  15 => 
  array (
    0 => \'Categories\',
    1 => \'manage_categories\',
    2 => \'edit-tags.php?taxonomy=category\',
  ),
  16 => 
  array (
    0 => \'Tags\',
    1 => \'manage_categories\',
    2 => \'edit-tags.php?taxonomy=post_tag\',
  ),
)

索引“10”是添加新项。要添加新的子菜单项，请使用索引11、12和13：

    $submenu[\'edit.php\'][11] = array( \'Add New Profile\', \'manage_options\' , \'/wp-admin/post-new.php?post_cat=pitches\' );
    $submenu[\'edit.php\'][12] = array( \'Add New News\', \'manage_options\' , \'/wp-admin/post-new.php?post_cat=news\' );
    $submenu[\'edit.php\'][13] = array( \'Add New Pitch\', \'manage_options\' , \'/wp-admin/post-new.php?post_cat=pitch\' );

当WordPress将子菜单项添加到它处理的仪表板时$submenu作为关联数组。添加到edit.php无论使用的键是什么，数组都将添加到数组的末尾。使用ksort() 订购钥匙。

    ksort( $submenu[\'edit.php\'], SORT_NUMERIC );

总而言之：

add_action( \'admin_menu\' , \'admin_menu_new_items\', 1 );
function admin_menu_new_items() {
    global $submenu;

    $submenu[\'edit.php\'][11] = array( \'Add New Profile\', \'manage_options\' , \'/wp-admin/post-new.php?post_cat=pitches\' );
    $submenu[\'edit.php\'][12] = array( \'Add New News\', \'manage_options\' , \'/wp-admin/post-new.php?post_cat=news\' );
    $submenu[\'edit.php\'][13] = array( \'Add New Pitch\', \'manage_options\' , \'/wp-admin/post-new.php?post_cat=pitch\' );

    // WordPress treats $submenu as an associative array and does not sort it first.
    // We have to sort keys into the order we want them to show up.
    ksort( $submenu[\'edit.php\'], SORT_NUMERIC );
}