All Member Variables of WP_Post

As of WordPress Version 3.5.1. The WP_Post class is used to contain post objects stored by the database and is returned by functions such as get_post, WP_Query, query_posts.

Member Variable	Variable Type	Notes
ID	int	The ID of the post
post_author	string	The post author’s user ID (numeric string)
post_name	string	The post’s slug
post_type	string	Post Types
post_title	string	The title of the post
post_date	string	Format: 0000-00-00 00:00:00
post_date_gmt	string	Format: 0000-00-00 00:00:00
post_content	string	The full content of the post
post_excerpt	string	User-defined post excerpt
post_status	string	Post status for values, get_post_status to get value
comment_status	string	Returns: { open, closed }
ping_status	string	Returns: { open, closed }
post_password	string	Returns empty string if no password
post_parent	int	Parent Post ID (default 0)
post_modified	string	Format: 0000-00-00 00:00:00
post_modified_gmt	string	Format: 0000-00-00 00:00:00
comment_count	string	Number of comments on post (numeric string)
menu_order	string	Order value as set through page-attribute when enabled (numeric string. Defaults to 0)

Example:

WP_Post::__set_state(
	array( 
		'ID'                      => 2, 
		'post_author'             => '1', 
		'post_date'               => '2011-08-21 23:31:47', 
		'post_date_gmt'           => '2011-08-22 06:31:47', 
		'post_content'            => '', 
		'post_title'              => 'Example Post', 
		'post_excerpt'            => '', 
		'post_status'             => 'publish', 
		'comment_status'          => 'open', 
		'ping_status'             => 'closed', 
		'post_password'           => '', 
		'post_name'               => 'example-post', 
		'to_ping'                 => '',
		'pinged'                  => '', 
		'post_modified'           => '2012-01-20 22:11:53', 
		'post_modified_gmt'       => '2012-01-21 05:11:53', 
		'post_content_filtered'   => '', 
		'post_parent'             => 0, 
		'guid'                    => 'http://example.com/wp/?page_id=2', 
		'menu_order'              => 0, 
		'post_type'               => 'page', 
		'post_mime_type'          => '', 
		'comment_count'           => '0', 
		'filter'                  => 'raw', 
	)
)