tatus is transitioned from private to published.
		 *
		 * @since 1.5.0
		 * @deprecated 2.3.0 Use {@see 'private_to_publish'} instead.
		 *
		 * @param int $post_id Post ID.
		 */
		do_action_deprecated( 'private_to_published', array( $post->ID ), '2.3.0', 'private_to_publish' );
	}

	// If published posts changed clear the lastpostmodified cache.
	if ( 'publish' === $new_status || 'publish' === $old_status ) {
		foreach ( array( 'server', 'gmt', 'blog' ) as $timezone ) {
			wp_cache_delete( "lastpostmodified:$timezone", 'timeinfo' );
			wp_cache_delete( "lastpostdate:$timezone", 'timeinfo' );
			wp_cache_delete( "lastpostdate:$timezone:{$post->post_type}", 'timeinfo' );
		}
	}

	if ( $new_status !== $old_status ) {
		wp_cache_delete( _count_posts_cache_key( $post->post_type ), 'counts' );
		wp_cache_delete( _count_posts_cache_key( $post->post_type, 'readable' ), 'counts' );
	}

	// Always clears the hook in case the post status bounced from future to draft.
	wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) );
}

/**
 * Hook used to schedule publication for a post marked for the future.
 *
 * The $post properties used and must exist are 'ID' and 'post_date_gmt'.
 *
 * @since 2.3.0
 * @access private
 *
 * @param int     $deprecated Not used. Can be set to null. Never implemented. Not marked
 *                            as deprecated with _deprecated_argument() as it conflicts with
 *                            wp_transition_post_status() and the default filter for _future_post_hook().
 * @param WP_Post $post       Post object.
 */
function _future_post_hook( $deprecated, $post ) {
	wp_clear_scheduled_hook( 'publish_future_post', array( $post->ID ) );
	wp_schedule_single_event( strtotime( get_gmt_from_date( $post->post_date ) . ' GMT' ), 'publish_future_post', array( $post->ID ) );
}

/**
 * Hook to schedule pings and enclosures when a post is published.
 *
 * Uses XMLRPC_REQUEST and WP_IMPORTING constants.
 *
 * @since 2.3.0
 * @access private
 *
 * @param int $post_id The ID of the post being published.
 */
function _publish_post_hook( $post_id ) {
	if ( defined( 'XMLRPC_REQUEST' ) ) {
		/**
		 * Fires when _publish_post_hook() is called during an XML-RPC request.
		 *
		 * @since 2.1.0
		 *
		 * @param int $post_id Post ID.
		 */
		do_action( 'xmlrpc_publish_post', $post_id );
	}

	if ( defined( 'WP_IMPORTING' ) ) {
		return;
	}

	if ( get_option( 'default_pingback_flag' ) ) {
		add_post_meta( $post_id, '_pingme', '1', true );
	}
	add_post_meta( $post_id, '_encloseme', '1', true );

	$to_ping = get_to_ping( $post_id );
	if ( ! empty( $to_ping ) ) {
		add_post_meta( $post_id, '_trackbackme', '1' );
	}

	if ( ! wp_next_scheduled( 'do_pings' ) ) {
		wp_schedule_single_event( time(), 'do_pings' );
	}
}

/**
 * Returns the ID of the post's parent.
 *
 * @since 3.1.0
 * @since 5.9.0 The `$post` parameter was made optional.
 *
 * @param int|WP_Post|null $post Optional. Post ID or post object. Defaults to global $post.
 * @return int|false Post parent ID (which can be 0 if there is no parent),
 *                   or false if the post does not exist.
 */
function wp_get_post_parent_id( $post = null ) {
	$post = get_post( $post );
	if ( ! $post || is_wp_error( $post ) ) {
		return false;
	}
	return (int) $post->post_parent;
}

/**
 * Check the given subset of the post hierarchy for hierarchy loops.
 *
 * Prevents loops from forming and breaks those that it finds. Attached
 * to the {@see 'wp_insert_post_parent'} filter.
 *
 * @since 3.1.0
 *
 * @see wp_find_hierarchy_loop()
 *
 * @param int $post_parent ID of the parent for the post we're checking.
 * @param int $post_ID     ID of the post we're checking.
 * @return int The new post_parent for the post, 0 otherwise.
 */
function wp_check_post_hierarchy_for_loops( $post_parent, $post_ID ) {
	// Nothing fancy here - bail.
	if ( ! $post_parent ) {
		return 0;
	}

	// New post can't cause a loop.
	if ( ! $post_ID ) {
		return $post_parent;
	}

	// Can't be its own parent.
	if ( $post_parent == $post_ID ) {
		return 0;
	}

	// Now look for larger loops.
	$loop = wp_find_hierarchy_loop( 'wp_get_post_parent_id', $post_ID, $post_parent );
	if ( ! $loop ) {
		return $post_parent; // No loop.
	}

	// Setting $post_parent to the given value causes a loop.
	if ( isset( $loop[ $post_ID ] ) ) {
		return 0;
	}

	// There's a loop, but it doesn't contain $post_ID. Break the loop.
	foreach ( array_keys( $loop ) as $loop_member ) {
		wp_update_post(
			array(
				'ID'          => $loop_member,
				'post_parent' => 0,
			)
		);
	}

	return $post_parent;
}

/**
 * Sets the post thumbnail (featured image) for the given post.
 *
 * @since 3.1.0
 *
 * @param int|WP_Post $post         Post ID or post object where thumbnail should be attached.
 * @param int         $thumbnail_id Thumbnail to attach.
 * @return int|bool True on success, false on failure.
 */
function set_post_thumbnail( $post, $thumbnail_id ) {
	$post         = get_post( $post );
	$thumbnail_id = absint( $thumbnail_id );
	if ( $post && $thumbnail_id && get_post( $thumbnail_id ) ) {
		if ( wp_get_attachment_image( $thumbnail_id, 'thumbnail' ) ) {
			return update_post_meta( $post->ID, '_thumbnail_id', $thumbnail_id );
		} else {
			return delete_post_meta( $post->ID, '_thumbnail_id' );
		}
	}
	return false;
}

/**
 * Removes the thumbnail (featured image) from the given post.
 *
 * @since 3.3.0
 *
 * @param int|WP_Post $post Post ID or post object from which the thumbnail should be removed.
 * @return bool True on success, false on failure.
 */
function delete_post_thumbnail( $post ) {
	$post = get_post( $post );
	if ( $post ) {
		return delete_post_meta( $post->ID, '_thumbnail_id' );
	}
	return false;
}

/**
 * Delete auto-drafts for new posts that are > 7 days old.
 *
 * @since 3.4.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 */
function wp_delete_auto_drafts() {
	global $wpdb;

	// Cleanup old auto-drafts more than 7 days old.
	$old_posts = $wpdb->get_col( "SELECT ID FROM $wpdb->posts WHERE post_status = 'auto-draft' AND DATE_SUB( NOW(), INTERVAL 7 DAY ) > post_date" );
	foreach ( (array) $old_posts as $delete ) {
		// Force delete.
		wp_delete_post( $delete, true );
	}
}

/**
 * Queues posts for lazy-loading of term meta.
 *
 * @since 4.5.0
 *
 * @param array $posts Array of WP_Post objects.
 */
function wp_queue_posts_for_term_meta_lazyload( $posts ) {
	$post_type_taxonomies = array();
	$term_ids             = array();
	foreach ( $posts as $post ) {
		if ( ! ( $post instanceof WP_Post ) ) {
			continue;
		}

		if ( ! isset( $post_type_taxonomies[ $post->post_type ] ) ) {
			$post_type_taxonomies[ $post->post_type ] = get_object_taxonomies( $post->post_type );
		}

		foreach ( $post_type_taxonomies[ $post->post_type ] as $taxonomy ) {
			// Term cache should already be primed by `update_post_term_cache()`.
			$terms = get_object_term_cache( $post->ID, $taxonomy );
			if ( false !== $terms ) {
				foreach ( $terms as $term ) {
					if ( ! in_array( $term->term_id, $term_ids, true ) ) {
						$term_ids[] = $term->term_id;
					}
				}
			}
		}
	}

	if ( $term_ids ) {
		$lazyloader = wp_metadata_lazyloader();
		$lazyloader->queue_objects( 'term', $term_ids );
	}
}

/**
 * Update the custom taxonomies' term counts when a post's status is changed.
 *
 * For example, default posts term counts (for custom taxonomies) don't include
 * private / draft posts.
 *
 * @since 3.3.0
 * @access private
 *
 * @param string  $new_status New post status.
 * @param string  $old_status Old post status.
 * @param WP_Post $post       Post object.
 */
function _update_term_count_on_transition_post_status( $new_status, $old_status, $post ) {
	// Update counts for the post's terms.
	foreach ( (array) get_object_taxonomies( $post->post_type ) as $taxonomy ) {
		$tt_ids = wp_get_object_terms( $post->ID, $taxonomy, array( 'fields' => 'tt_ids' ) );
		wp_update_term_count( $tt_ids, $taxonomy );
	}
}

/**
 * Adds any posts from the given IDs to the cache that do not already exist in cache.
 *
 * @since 3.4.0
 * @access private
 *
 * @see update_post_caches()
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param array $ids               ID list.
 * @param bool  $update_term_cache Optional. Whether to update the term cache. Default true.
 * @param bool  $update_meta_cache Optional. Whether to update the meta cache. Default true.
 */
function _prime_post_caches( $ids, $update_term_cache = true, $update_meta_cache = true ) {
	global $wpdb;

	$non_cached_ids = _get_non_cached_ids( $ids, 'posts' );
	if ( ! empty( $non_cached_ids ) ) {
		$fresh_posts = $wpdb->get_results( sprintf( "SELECT $wpdb->posts.* FROM $wpdb->posts WHERE ID IN (%s)", implode( ',', $non_cached_ids ) ) );

		update_post_caches( $fresh_posts, 'any', $update_term_cache, $update_meta_cache );
	}
}

/**
 * Adds a suffix if any trashed posts have a given slug.
 *
 * Store its desired (i.e. current) slug so it can try to reclaim it
 * if the post is untrashed.
 *
 * For internal use.
 *
 * @since 4.5.0
 * @access private
 *
 * @param string $post_name Post slug.
 * @param int    $post_ID   Optional. Post ID that should be ignored. Default 0.
 */
function wp_add_trashed_suffix_to_post_name_for_trashed_posts( $post_name, $post_ID = 0 ) {
	$trashed_posts_with_desired_slug = get_posts(
		array(
			'name'         => $post_name,
			'post_status'  => 'trash',
			'post_type'    => 'any',
			'nopaging'     => true,
			'post__not_in' => array( $post_ID ),
		)
	);

	if ( ! empty( $trashed_posts_with_desired_slug ) ) {
		foreach ( $trashed_posts_with_desired_slug as $_post ) {
			wp_add_trashed_suffix_to_post_name_for_post( $_post );
		}
	}
}

/**
 * Adds a trashed suffix for a given post.
 *
 * Store its desired (i.e. current) slug so it can try to reclaim it
 * if the post is untrashed.
 *
 * For internal use.
 *
 * @since 4.5.0
 * @access private
 *
 * @param WP_Post $post The post.
 * @return string New slug for the post.
 */
function wp_add_trashed_suffix_to_post_name_for_post( $post ) {
	global $wpdb;

	$post = get_post( $post );

	if ( '__trashed' === substr( $post->post_name, -9 ) ) {
		return $post->post_name;
	}
	add_post_meta( $post->ID, '_wp_desired_post_slug', $post->post_name );
	$post_name = _truncate_post_slug( $post->post_name, 191 ) . '__trashed';
	$wpdb->update( $wpdb->posts, array( 'post_name' => $post_name ), array( 'ID' => $post->ID ) );
	clean_post_cache( $post->ID );
	return $post_name;
}

/**
 * Sets the last changed time for the 'posts' cache group.
 *
 * @since 5.0.0
 */
function wp_cache_set_posts_last_changed() {
	wp_cache_set( 'last_changed', microtime(), 'posts' );
}

/**
 * Get all available post MIME types for a given post type.
 *
 * @since 2.5.0
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string $type
 * @return mixed
 */
function get_available_post_mime_types( $type = 'attachment' ) {
	global $wpdb;

	$types = $wpdb->get_col( $wpdb->prepare( "SELECT DISTINCT post_mime_type FROM $wpdb->posts WHERE post_type = %s", $type ) );
	return $types;
}

/**
 * Retrieves the path to an uploaded image file.
 *
 * Similar to `get_attached_file()` however some images may have been processed after uploading
 * to make them suitable for web use. In this case the attached "full" size file is usually replaced
 * with a scaled down version of the original image. This function always returns the path
 * to the originally uploaded image file.
 *
 * @since 5.3.0
 * @since 5.4.0 Added the `$unfiltered` parameter.
 *
 * @param int  $attachment_id Attachment ID.
 * @param bool $unfiltered Optional. Passed through to `get_attached_file()`. Default false.
 * @return string|false Path to the original image file or false if the attachment is not an image.
 */
function wp_get_original_image_path( $attachment_id, $unfiltered = false ) {
	if ( ! wp_attachment_is_image( $attachment_id ) ) {
		return false;
	}

	$image_meta = wp_get_attachment_metadata( $attachment_id );
	$image_file = get_attached_file( $attachment_id, $unfiltered );

	if ( empty( $image_meta['original_image'] ) ) {
		$original_image = $image_file;
	} else {
		$original_image = path_join( dirname( $image_file ), $image_meta['original_image'] );
	}

	/**
	 * Filters the path to the original image.
	 *
	 * @since 5.3.0
	 *
	 * @param string $original_image Path to original image file.
	 * @param int    $attachment_id  Attachment ID.
	 */
	return apply_filters( 'wp_get_original_image_path', $original_image, $attachment_id );
}

/**
 * Retrieve the URL to an original attachment image.
 *
 * Similar to `wp_get_attachment_url()` however some images may have been
 * processed after uploading. In this case this function returns the URL
 * to the originally uploaded image file.
 *
 * @since 5.3.0
 *
 * @param int $attachment_id Attachment post ID.
 * @return string|false Attachment image URL, false on error or if the attachment is not an image.
 */
function wp_get_original_image_url( $attachment_id ) {
	if ( ! wp_attachment_is_image( $attachment_id ) ) {
		return false;
	}

	$image_url = wp_get_attachment_url( $attachment_id );

	if ( ! $image_url ) {
		return false;
	}

	$image_meta = wp_get_attachment_metadata( $attachment_id );

	if ( empty( $image_meta['original_image'] ) ) {
		$original_image_url = $image_url;
	} else {
		$original_image_url = path_join( dirname( $image_url ), $image_meta['original_image'] );
	}

	/**
	 * Filters the URL to the original attachment image.
	 *
	 * @since 5.3.0
	 *
	 * @param string $original_image_url URL to original image.
	 * @param int    $attachment_id      Attachment ID.
	 */
	return apply_filters( 'wp_get_original_image_url', $original_image_url, $attachment_id );
}

/**
 * Filter callback which sets the status of an untrashed post to its previous status.
 *
 * This can be used as a callback on the `wp_untrash_post_status` filter.
 *
 * @since 5.6.0
 *
 * @param string $new_status      The new status of the post being restored.
 * @param int    $post_id         The ID of the post being restored.
 * @param string $previous_status The status of the post at the point where it was trashed.
 * @return string The new status of the post.
 */
function wp_untrash_post_set_previous_status( $new_status, $post_id, $previous_status ) {
	return $previous_status;
}