Index: src/wp-includes/post.php
===================================================================
--- src/wp-includes/post.php	(リビジョン 43852)
+++ src/wp-includes/post.php	(作業コピー)
@@ -3307,7 +3307,7 @@
  *     @type int    $menu_order            The order the post should be displayed in. Default 0.
  *     @type string $post_mime_type        The mime type of the post. Default empty.
  *     @type string $guid                  Global Unique ID for referencing the post. Default empty.
- *     @type array  $post_category         Array of category names, slugs, or IDs.
+ *     @type array  $post_category         Array of category IDs.
  *                                         Defaults to value of the 'default_category' option.
  *     @type array  $tags_input            Array of tag names, slugs, or IDs. Default empty.
  *     @type array  $tax_input             Array of taxonomy terms keyed by their taxonomy name. Default empty.
@@ -4293,7 +4293,7 @@
  *
  * @param int       $post_ID         Optional. The Post ID. Does not default to the ID
  *                                   of the global $post. Default 0.
- * @param array|int $post_categories Optional. List of categories or ID of category.
+ * @param array|int $post_categories Optional. List of category IDs or ID of category.
  *                                   Default empty array.
  * @param bool      $append         If true, don't delete existing categories, just add on.
  *                                  If false, replace the categories with the new categories.