<?php

/**

 * Query API: WP_Query class

 *

 * @package WordPress

 * @subpackage Query

 * @since 4.7.0

 */

/**

 * The WordPress Query class.

 *

 * @link https://codex.wordpress.org/Function_Reference/WP_Query Codex page.

 *

 * @since 1.5.0

 * @since 4.5.0 Removed the `$comments_popup` property.

 */

class WP_Query {

	/**

	 * Query vars set by the user

	 *

	 * @since 1.5.0

	 * @var array

	 */

	public $query;

	/**

	 * Query vars, after parsing

	 *

	 * @since 1.5.0

	 * @var array

	 */

	public $query_vars = array();

	/**

	 * Taxonomy query, as passed to get_tax_sql()

	 *

	 * @since 3.1.0

	 * @var object WP_Tax_Query

	 */

	public $tax_query;

	/**

	 * Metadata query container

	 *

	 * @since 3.2.0

	 * @var object WP_Meta_Query

	 */

	public $meta_query = false;

	/**

	 * Date query container

	 *

	 * @since 3.7.0

	 * @var object WP_Date_Query

	 */

	public $date_query = false;

	/**

	 * Holds the data for a single object that is queried.

	 *

	 * Holds the contents of a post, page, category, attachment.

	 *

	 * @since 1.5.0

	 * @var object|array

	 */

	public $queried_object;

	/**

	 * The ID of the queried object.

	 *

	 * @since 1.5.0

	 * @var int

	 */

	public $queried_object_id;

	/**

	 * Get post database query.

	 *

	 * @since 2.0.1

	 * @var string

	 */

	public $request;

	/**

	 * List of posts.

	 *

	 * @since 1.5.0

	 * @var array

	 */

	public $posts;

	/**

	 * The amount of posts for the current query.

	 *

	 * @since 1.5.0

	 * @var int

	 */

	public $post_count = 0;

	/**

	 * Index of the current item in the loop.

	 *

	 * @since 1.5.0

	 * @var int

	 */

	public $current_post = -1;

	/**

	 * Whether the loop has started and the caller is in the loop.

	 *

	 * @since 2.0.0

	 * @var bool

	 */

	public $in_the_loop = false;

	/**

	 * The current post.

	 *

	 * @since 1.5.0

	 * @var WP_Post

	 */

	public $post;

	/**

	 * The list of comments for current post.

	 *

	 * @since 2.2.0

	 * @var array

	 */

	public $comments;

	/**

	 * The amount of comments for the posts.

	 *

	 * @since 2.2.0

	 * @var int

	 */

	public $comment_count = 0;

	/**

	 * The index of the comment in the comment loop.

	 *

	 * @since 2.2.0

	 * @var int

	 */

	public $current_comment = -1;

	/**

	 * Current comment ID.

	 *

	 * @since 2.2.0

	 * @var int

	 */

	public $comment;

	/**

	 * The amount of found posts for the current query.

	 *

	 * If limit clause was not used, equals $post_count.

	 *

	 * @since 2.1.0

	 * @var int

	 */

	public $found_posts = 0;

	/**

	 * The amount of pages.

	 *

	 * @since 2.1.0

	 * @var int

	 */

	public $max_num_pages = 0;

	/**

	 * The amount of comment pages.

	 *

	 * @since 2.7.0

	 * @var int

	 */

	public $max_num_comment_pages = 0;

	/**

	 * Signifies whether the current query is for a single post.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_single = false;

	/**

	 * Signifies whether the current query is for a preview.

	 *

	 * @since 2.0.0

	 * @var bool

	 */

	public $is_preview = false;

	/**

	 * Signifies whether the current query is for a page.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_page = false;

	/**

	 * Signifies whether the current query is for an archive.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_archive = false;

	/**

	 * Signifies whether the current query is for a date archive.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_date = false;

	/**

	 * Signifies whether the current query is for a year archive.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_year = false;

	/**

	 * Signifies whether the current query is for a month archive.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_month = false;

	/**

	 * Signifies whether the current query is for a day archive.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_day = false;

	/**

	 * Signifies whether the current query is for a specific time.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_time = false;

	/**

	 * Signifies whether the current query is for an author archive.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_author = false;

	/**

	 * Signifies whether the current query is for a category archive.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_category = false;

	/**

	 * Signifies whether the current query is for a tag archive.

	 *

	 * @since 2.3.0

	 * @var bool

	 */

	public $is_tag = false;

	/**

	 * Signifies whether the current query is for a taxonomy archive.

	 *

	 * @since 2.5.0

	 * @var bool

	 */

	public $is_tax = false;

	/**

	 * Signifies whether the current query is for a search.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_search = false;

	/**

	 * Signifies whether the current query is for a feed.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_feed = false;

	/**

	 * Signifies whether the current query is for a comment feed.

	 *

	 * @since 2.2.0

	 * @var bool

	 */

	public $is_comment_feed = false;

	/**

	 * Signifies whether the current query is for trackback endpoint call.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_trackback = false;

	/**

	 * Signifies whether the current query is for the site homepage.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_home = false;

	/**

	 * Signifies whether the current query couldn't find anything.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_404 = false;

	/**

	 * Signifies whether the current query is for an embed.

	 *

	 * @since 4.4.0

	 * @var bool

	 */

	public $is_embed = false;

	/**

	 * Signifies whether the current query is for a paged result and not for the first page.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_paged = false;

	/**

	 * Signifies whether the current query is for an administrative interface page.

	 *

	 * @since 1.5.0

	 * @var bool

	 */

	public $is_admin = false;

	/**

	 * Signifies whether the current query is for an attachment page.

	 *

	 * @since 2.0.0

	 * @var bool

	 */

	public $is_attachment = false;

	/**

	 * Signifies whether the current query is for an existing single post of any post type

	 * (post, attachment, page, custom post types).

	 *

	 * @since 2.1.0

	 * @var bool

	 */

	public $is_singular = false;

	/**

	 * Signifies whether the current query is for the robots.txt file.

	 *

	 * @since 2.1.0

	 * @var bool

	 */

	public $is_robots = false;

	/**

	 * Signifies whether the current query is for the page_for_posts page.

	 *

	 * Basically, the homepage if the option isn't set for the static homepage.

	 *

	 * @since 2.1.0

	 * @var bool

	 */

	public $is_posts_page = false;

	/**

	 * Signifies whether the current query is for a post type archive.

	 *

	 * @since 3.1.0

	 * @var bool

	 */

	public $is_post_type_archive = false;

	/**

	 * Stores the ->query_vars state like md5(serialize( $this->query_vars ) ) so we know

	 * whether we have to re-parse because something has changed

	 *

	 * @since 3.1.0

	 * @var bool|string

	 */

	private $query_vars_hash = false;

	/**

	 * Whether query vars have changed since the initial parse_query() call. Used to catch modifications to query vars made

	 * via pre_get_posts hooks.

	 *

	 * @since 3.1.1

	 */

	private $query_vars_changed = true;

	/**

	 * Set if post thumbnails are cached

	 *

	 * @since 3.2.0

	 * @var bool

	 */

	 public $thumbnails_cached = false;

	/**

	 * Cached list of search stopwords.

	 *

	 * @since 3.7.0

	 * @var array

	 */

	private $stopwords;

	private $compat_fields = array( 'query_vars_hash', 'query_vars_changed' );

	private $compat_methods = array( 'init_query_flags', 'parse_tax_query' );

	/**

	 * Resets query flags to false.

	 *

	 * The query flags are what page info WordPress was able to figure out.

	 *

	 * @since 2.0.0

	 */

	private function init_query_flags() {

		$this->is_single = false;

		$this->is_preview = false;

		$this->is_page = false;

		$this->is_archive = false;

		$this->is_date = false;

		$this->is_year = false;

		$this->is_month = false;

		$this->is_day = false;

		$this->is_time = false;

		$this->is_author = false;

		$this->is_category = false;

		$this->is_tag = false;

		$this->is_tax = false;

		$this->is_search = false;

		$this->is_feed = false;

		$this->is_comment_feed = false;

		$this->is_trackback = false;

		$this->is_home = false;

		$this->is_404 = false;

		$this->is_paged = false;

		$this->is_admin = false;

		$this->is_attachment = false;

		$this->is_singular = false;

		$this->is_robots = false;

		$this->is_posts_page = false;

		$this->is_post_type_archive = false;

	}

	/**

	 * Initiates object properties and sets default values.

	 *

	 * @since 1.5.0

	 */

	public function init() {

		unset($this->posts);

		unset($this->query);

		$this->query_vars = array();

		unset($this->queried_object);

		unset($this->queried_object_id);

		$this->post_count = 0;

		$this->current_post = -1;

		$this->in_the_loop = false;

		unset( $this->request );

		unset( $this->post );

		unset( $this->comments );

		unset( $this->comment );

		$this->comment_count = 0;

		$this->current_comment = -1;

		$this->found_posts = 0;

		$this->max_num_pages = 0;

		$this->max_num_comment_pages = 0;

		$this->init_query_flags();

	}

	/**

	 * Reparse the query vars.

	 *

	 * @since 1.5.0

	 */

	public function parse_query_vars() {

		$this->parse_query();

	}

	/**

	 * Fills in the query variables, which do not exist within the parameter.

	 *

	 * @since 2.1.0

	 * @since 4.4.0 Removed the `comments_popup` public query variable.

	 *

	 * @param array $array Defined query variables.

	 * @return array Complete query variables with undefined ones filled in empty.

	 */

	public function fill_query_vars($array) {

		$keys = array(

			'error'

			, 'm'

			, 'p'

			, 'post_parent'

			, 'subpost'

			, 'subpost_id'

			, 'attachment'