WP: 投稿の情報を取得（$post）

$postを使用して投稿の情報を取得します。
下記URLの本家サイトから引用させていただき、使いそうな項目だけ日本語をつけました。
引用元＝https://codex.wordpress.org/Function_Reference/$post

$post

Contains data from the current post in The Loop.

Properties

• ID
  (integer) The post ID. 投稿のID
• post_author
  (integer) The ID of the post author. 投稿者のID
• post_date
  (string) The post date using the server’s current timezone. 投稿日時
  Format: yyyy-mm-dd hh:mm:ss
  Example: 2011-05-19 13:51:21 (default Unix format ‘F j, Y’)
• post_date_gmt
  (string) Same as above, but in GMT. 投稿日時GMT
• post_content
  (string) The post content. 投稿内容
• post_title
  (string) The post’s title. 投稿タイトル
• post_excerpt
  (string) The post’s excerpt, if one is set. 投稿の抜粋
• post_status
  (string) See get_post_status for possible values. 投稿の状態
• comment_status
  (string) See wp_get_comment_status for possible values. コメント投稿の状態
• ping_status
  (string) Values: ‘open’ or ‘closed’.
• post_password
  (string) The post’s password.
• post_name
  (string) The post’s slug. 投稿のスラッグ
• to_ping
  (string) Addresses to be pinged.
• pinged
  (string) Addresses already pinged.
• post_modified
  (string) Date the post was last modified using server’s timezone.
• post_modified_gmt
  (string) Same as above in GMT.
• post_content_filtered
• post_parent
  (integer) ID of the post’s parent, if it has one.
• guid
  (string) A link to the post. This is not the permalink. To get the permalink use get_permalink.
• menu_order
  (integer) The value set in the ‘Order’ field for pages.
• post_type
  (string) The post type.
• post_mime_type
  (string) Mime Type (for attachments, etc).
• comment_count
  (integer) The number of approved comments.
• ancestors
  (array) An array of the post’s ancestors’ IDs (parent, parent’s parent, etc). [0] = parent, [1] = grandparent, etc.
• filter
  (string)

Usage

<?php
global $post;
echo $post->post_title;
?>