<?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 is for the Privacy Policy page.

*

* @since 5.2.0

* @var bool

*/

public $is_privacy_policy = 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;

/**

* Controls whether an attachment query should include filenames or not.

*

* @since 6.0.3

* @var bool

*/

protected $allow_query_attachment_by_filename = 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_privacy_policy = 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',

'attachment_id',

'name',

'pagename',

'page_id',

'second',

'minute',

'hour',

'day',

'monthnum',

'year',

'w',

'category_name',

'tag',

'cat',

'tag_id',

'author',

'author_name',

'feed',

'tb',

'paged',

'meta_key',

'meta_value',

'preview',

's',

'sentence',

'title',

'fields',

'menu_order',

'embed',

);

foreach ( $keys as $key ) {

if ( ! isset( $array[ $key ] ) ) {

$array[ $key ] = '';

}

}

$array_keys = array(

'category__in',

'category__not_in',

'category__and',

'post__in',

'post__not_in',

'post_name__in',

'tag__in',

'tag__not_in',

'tag__and',

'tag_slug__in',

'tag_slug__and',

'post_parent__in',

'post_parent__not_in',

'author__in',

'author__not_in',

);

foreach ( $array_keys as $key ) {

if ( ! isset( $array[ $key ] ) ) {

$array[ $key ] = array();

}

}

return $array;

}

/**

* Parse a query string and set query type booleans.

*

* @since 1.5.0

* @since 4.2.0 Introduced the ability to order by specific clauses of a `$meta_query`, by passing the clause's

* array key to `$orderby`.

* @since 4.4.0 Introduced `$post_name__in` and `$title` parameters. `$s` was updated to support excluded

* search terms, by prepending a hyphen.

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

* Introduced the `$comment_status` and `$ping_status` parameters.

* Introduced `RAND(x)` syntax for `$orderby`, which allows an integer seed value to random sorts.

* @since 4.6.0 Added 'post_name__in' support for `$orderby`. Introduced the `$lazy_load_term_meta` argument.

* @since 4.9.0 Introduced the `$comment_count` parameter.

* @since 5.1.0 Introduced the `$meta_compare_key` parameter.

*

* @param string|array $query {

* Optional. Array or string of Query parameters.

*

* @type int $attachment_id Attachment post ID. Used for 'attachment' post_type.

* @type int|string $author Author ID, or comma-separated list of IDs.

* @type string $author_name User 'user_nicename'.

* @type array $author__in An array of author IDs to query from.

* @type array $author__not_in An array of author IDs not to query from.

* @type bool $cache_results Whether to cache post information. Default true.

* @type int|string $cat Category ID or comma-separated list of IDs (this or any children).

* @type array $category__and An array of category IDs (AND in).

* @type array $category__in An array of category IDs (OR in, no children).

* @type array $category__not_in An array of category IDs (NOT in).

* @type string $category_name Use category slug (not name, this or any children).

* @type array|int $comment_count Filter results by comment count. Provide an integer to match

* comment count exactly. Provide an array with integer 'value'

* and 'compare' operator ('=', '!=', '>', '>=', '<', '<=' ) to

* compare against comment_count in a specific way.

* @type string $comment_status Comment status.

* @type int $comments_per_page The number of comments to return per page.

* Default 'comments_per_page' option.

* @type array $date_query An associative array of WP_Date_Query arguments.

* See WP_Date_Query::__construct().

* @type int $day Day of the month. Default empty. Accepts numbers 1-31.

* @type bool $exact Whether to search by exact keyword. Default false.

* @type string|array $fields Which fields to return. Single field or all fields (string),

* or array of fields. 'id=>parent' uses 'id' and 'post_parent'.

* Default all fields. Accepts 'ids', 'id=>parent'.

* @type int $hour Hour of the day. Default empty. Accepts numbers 0-23.

* @type int|bool $ignore_sticky_posts Whether to ignore sticky posts or not. Setting this to false

* excludes stickies from 'post__in'. Accepts 1|true, 0|false.

* Default 0|false.

* @type int $m Combination YearMonth. Accepts any four-digit year and month

* numbers 1-12. Default empty.

* @type string $meta_compare Comparison operator to test the 'meta_value'.

* @type string $meta_compare_key Comparison operator to test the 'meta_key'.

* @type string $meta_key Custom field key.

* @type array $meta_query An associative array of WP_Meta_Query arguments. See WP_Meta_Query.

* @type string $meta_value Custom field value.

* @type int $meta_value_num Custom field value number.

* @type int $menu_order The menu order of the posts.

* @type int $monthnum The two-digit month. Default empty. Accepts numbers 1-12.

* @type string $name Post slug.

* @type bool $nopaging Show all posts (true) or paginate (false). Default false.

* @type bool $no_found_rows Whether to skip counting the total rows found. Enabling can improve

* performance. Default false.

* @type int $offset The number of posts to offset before retrieval.

* @type string $order Designates ascending or descending order of posts. Default 'DESC'.

* Accepts 'ASC', 'DESC'.

* @type string|array $orderby Sort retrieved posts by parameter. One or more options may be

* passed. To use 'meta_value', or 'meta_value_num',

* 'meta_key=keyname' must be also be defined. To sort by a

* specific `$meta_query` clause, use that clause's array key.

* Accepts 'none', 'name', 'author', 'date', 'title',

* 'modified', 'menu_order', 'parent', 'ID', 'rand',

* 'relevance', 'RAND(x)' (where 'x' is an integer seed value),

* 'comment_count', 'meta_value', 'meta_value_num', 'post__in',

* 'post_name__in', 'post_parent__in', and the array keys

* of `$meta_query`. Default is 'date', except when a search

* is being performed, when the default is 'relevance'.

*

* @type int $p Post ID.

* @type int $page Show the number of posts that would show up on page X of a

* static front page.

* @type int $paged The number of the current page.

* @type int $page_id Page ID.

* @type string $pagename Page slug.

* @type string $perm Show posts if user has the appropriate capability.

* @type string $ping_status Ping status.

* @type array $post__in An array of post IDs to retrieve, sticky posts will be included

* @type string $post_mime_type The mime type of the post. Used for 'attachment' post_type.

* @type array $post__not_in An array of post IDs not to retrieve. Note: a string of comma-

* separated IDs will NOT work.

* @type int $post_parent Page ID to retrieve child pages for. Use 0 to only retrieve

* top-level pages.

* @type array $post_parent__in An array containing parent page IDs to query child pages from.

* @type array $post_parent__not_in An array containing parent page IDs not to query child pages from.

* @type string|array $post_type A post type slug (string) or array of post type slugs.

* Default 'any' if using 'tax_query'.

* @type string|array $post_status A post status (string) or array of post statuses.

* @type int $posts_per_page The number of posts to query for. Use -1 to request all posts.

* @type int $posts_per_archive_page The number of posts to query for by archive page. Overrides

* 'posts_per_page' when is_archive(), or is_search() are true.

* @type array $post_name__in An array of post slugs that results must match.

* @type string $s Search keyword(s). Prepending a term with a hyphen will

* exclude posts matching that term. Eg, 'pillow -sofa' will

* return posts containing 'pillow' but not 'sofa'. The

* character used for exclusion can be modified using the

* the 'wp_query_search_exclusion_prefix' filter.

* @type int $second Second of the minute. Default empty. Accepts numbers 0-60.

* @type bool $sentence Whether to search by phrase. Default false.

* @type bool $suppress_filters Whether to suppress filters. Default false.

* @type string $tag Tag slug. Comma-separated (either), Plus-separated (all).

* @type array $tag__and An array of tag ids (AND in).

* @type array $tag__in An array of tag ids (OR in).

* @type array $tag__not_in An array of tag ids (NOT in).

* @type int $tag_id Tag id or comma-separated list of IDs.

* @type array $tag_slug__and An array of tag slugs (AND in).

* @type array $tag_slug__in An array of tag slugs (OR in). unless 'ignore_sticky_posts' is

* true. Note: a string of comma-separated IDs will NOT work.

* @type array $tax_query An associative array of WP_Tax_Query arguments.

* See WP_Tax_Query->queries.

* @type string $title Post title.

* @type bool $update_post_meta_cache Whether to update the post meta cache. Default true.

* @type bool $update_post_term_cache Whether to update the post term cache. Default true.

* @type bool $lazy_load_term_meta Whether to lazy-load term meta. Setting to false will

* disable cache priming for term meta, so that each

* get_term_meta() call will hit the database.

* Defaults to the value of `$update_post_term_cache`.

* @type int $w The week number of the year. Default empty. Accepts numbers 0-53.

* @type int $year The four-digit year. Default empty. Accepts any four-digit year.

* }

*/

public function parse_query( $query = '' ) {

if ( ! empty( $query ) ) {

$this->init();

$this->query = $this->query_vars = wp_parse_args( $query );

} elseif ( ! isset( $this->query ) ) {

$this->query = $this->query_vars;

}

$this->query_vars = $this->fill_query_vars( $this->query_vars );

$qv = &$this->query_vars;

$this->query_vars_changed = true;

if ( ! empty( $qv['robots'] ) ) {

$this->is_robots = true;

}

if ( ! is_scalar( $qv['p'] ) || $qv['p'] < 0 ) {

$qv['p'] = 0;

$qv['error'] = '404';

} else {

$qv['p'] = intval( $qv['p'] );

}

$qv['page_id'] = absint( $qv['page_id'] );

$qv['year'] = absint( $qv['year'] );

$qv['monthnum'] = absint( $qv['monthnum'] );

$qv['day'] = absint( $qv['day'] );

$qv['w'] = absint( $qv['w'] );

$qv['m'] = is_scalar( $qv['m'] ) ? preg_replace( '|[^0-9]|', '', $qv['m'] ) : '';

$qv['paged'] = absint( $qv['paged'] );

$qv['cat'] = preg_replace( '|[^0-9,-]|', '', $qv['cat'] ); // comma separated list of positive or negative integers

$qv['author'] = preg_replace( '|[^0-9,-]|', '', $qv['author'] ); // comma separated list of positive or negative integers

$qv['pagename'] = trim( $qv['pagename'] );

$qv['name'] = trim( $qv['name'] );

$qv['title'] = trim( $qv['title'] );

if ( '' !== $qv['hour'] ) {

$qv['hour'] = absint( $qv['hour'] );

}

if ( '' !== $qv['minute'] ) {

$qv['minute'] = absint( $qv['minute'] );

}

if ( '' !== $qv['second'] ) {

$qv['second'] = absint( $qv['second'] );

}

if ( '' !== $qv['menu_order'] ) {

$qv['menu_order'] = absint( $qv['menu_order'] );

}

// Fairly insane upper bound for search string lengths.

if ( ! is_scalar( $qv['s'] ) || ( ! empty( $qv['s'] ) && strlen( $qv['s'] ) > 1600 ) ) {

$qv['s'] = '';

}

// Compat. Map subpost to attachment.

if ( '' != $qv['subpost'] ) {

$qv['attachment'] = $qv['subpost'];

}

if ( '' != $qv['subpost_id'] ) {

$qv['attachment_id'] = $qv['subpost_id'];

}

$qv['attachment_id'] = absint( $qv['attachment_id'] );

if ( ( '' != $qv['attachment'] ) || ! empty( $qv['attachment_id'] ) ) {

$this->is_single = true;

$this->is_attachment = true;

} elseif ( '' != $qv['name'] ) {

$this->is_single = true;

} elseif ( $qv['p'] ) {

$this->is_single = true;

} elseif ( '' != $qv['pagename'] || ! empty( $qv['page_id'] ) ) {

$this->is_page = true;

$this->is_single = false;

} else {

// Look for archive queries. Dates, categories, authors, search, post type archives.

if ( isset( $this->query['s'] ) ) {

$this->is_search = true;

}

if ( '' !== $qv['second'] ) {

$this->is_time = true;

$this->is_date = true;

}

if ( '' !== $qv['minute'] ) {

$this->is_time = true;

$this->is_date = true;

}

if ( '' !== $qv['hour'] ) {

$this->is_time = true;

$this->is_date = true;

}

if ( $qv['day'] ) {

if ( ! $this->is_date ) {

$date = sprintf( '%04d-%02d-%02d', $qv['year'], $qv['monthnum'], $qv['day'] );

if ( $qv['monthnum'] && $qv['year'] && ! wp_checkdate( $qv['monthnum'], $qv['day'], $qv['year'], $date ) ) {

$qv['error'] = '404';

} else {

$this->is_day = true;

$this->is_date = true;

}

}

}

if ( $qv['monthnum'] ) {

if ( ! $this->is_date ) {

if ( 12 < $qv['monthnum'] ) {

$qv['error'] = '404';

} else {

$this->is_month = true;

$this->is_date = true;

}

}

}

if ( $qv['year'] ) {

if ( ! $this->is_date ) {

$this->is_year = true;

$this->is_date = true;

}

}

if ( $qv['m'] ) {

$this->is_date = true;

if ( strlen( $qv['m'] ) > 9 ) {

$this->is_time = true;

} elseif ( strlen( $qv['m'] ) > 7 ) {

$this->is_day = true;

} elseif ( strlen( $qv['m'] ) > 5 ) {

$this->is_month = true;

} else {

$this->is_year = true;

}

}

if ( '' != $qv['w'] ) {

$this->is_date = true;

}

$this->query_vars_hash = false;

$this->parse_tax_query( $qv );

foreach ( $this->tax_query->queries as $tax_query ) {

if ( ! is_array( $tax_query ) ) {

continue;

}

if ( isset( $tax_query['operator'] ) && 'NOT IN' != $tax_query['operator'] ) {

switch ( $tax_query['taxonomy'] ) {

case 'category':

$this->is_category = true;

break;

case 'post_tag':

$this->is_tag = true;

break;

default:

$this->is_tax = true;

}

}

}

unset( $tax_query );

if ( empty( $qv['author'] ) || ( $qv['author'] == '0' ) ) {

$this->is_author = false;

} else {

$this->is_author = true;

}

if ( '' != $qv['author_name'] ) {

$this->is_author = true;

}

if ( ! empty( $qv['post_type'] ) && ! is_array( $qv['post_type'] ) ) {

$post_type_obj = get_post_type_object( $qv['post_type'] );

if ( ! empty( $post_type_obj->has_archive ) ) {

$this->is_post_type_archive = true;

}

}

if ( $this->is_post_type_archive || $this->is_date || $this->is_author || $this->is_category || $this->is_tag || $this->is_tax ) {

$this->is_archive = true;

}

}

if ( '' != $qv['feed'] ) {

$this->is_feed = true;

}

if ( '' != $qv['embed'] ) {

$this->is_embed = true;

}

if ( '' != $qv['tb'] ) {

$this->is_trackback = true;

}

if ( '' != $qv['paged'] && ( intval( $qv['paged'] ) > 1 ) ) {

$this->is_paged = true;

}

// if we're previewing inside the write screen

if ( '' != $qv['preview'] ) {

$this->is_preview = true;

}

if ( is_admin() ) {

$this->is_admin = true;

}

if ( false !== strpos( $qv['feed'], 'comments-' ) ) {

$qv['feed'] = str_replace( 'comments-', '', $qv['feed'] );

$qv['withcomments'] = 1;

}

$this->is_singular = $this->is_single || $this->is_page || $this->is_attachment;

if ( $this->is_feed && ( ! empty( $qv['withcomments'] ) || ( empty( $qv['withoutcomments'] ) && $this->is_singular ) ) ) {

$this->is_comment_feed = true;

}

if ( ! ( $this->is_singular || $this->is_archive || $this->is_search || $this->is_feed || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) || $this->is_trackback || $this->is_404 || $this->is_admin || $this->is_robots ) ) {

$this->is_home = true;

}

// Correct is_* for page_on_front and page_for_posts

if ( $this->is_home && 'page' == get_option( 'show_on_front' ) && get_option( 'page_on_front' ) ) {

$_query = wp_parse_args( $this->query );

// pagename can be set and empty depending on matched rewrite rules. Ignore an empty pagename.

if ( isset( $_query['pagename'] ) && '' == $_query['pagename'] ) {

unset( $_query['pagename'] );

}

unset( $_query['embed'] );

if ( empty( $_query ) || ! array_diff( array_keys( $_query ), array( 'preview', 'page', 'paged', 'cpage' ) ) ) {

$this->is_page = true;

$this->is_home = false;

$qv['page_id'] = get_option( 'page_on_front' );

// Correct <!--nextpage--> for page_on_front

if ( ! empty( $qv['paged'] ) ) {

$qv['page'] = $qv['paged'];

unset( $qv['paged'] );

}

}

}

if ( '' != $qv['pagename'] ) {

$this->queried_object = get_page_by_path( $qv['pagename'] );

if ( $this->queried_object && 'attachment' == $this->queried_object->post_type ) {

if ( preg_match( '/^[^%]*%(?:postname)%/', get_option( 'permalink_structure' ) ) ) {

// See if we also have a post with the same slug

$post = get_page_by_path( $qv['pagename'], OBJECT, 'post' );

if ( $post ) {

$this->queried_object = $post;

$this->is_page = false;

$this->is_single = true;

}

}

}