, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_tax( $taxonomy, $term ); } /** * Is the query for an existing date archive? * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_date() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_date(); } /** * Is the query for an existing day archive? * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_day() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_day(); } /** * Is the query for a feed? * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @param string|array $feeds Optional feed types to check. * @return bool */ function is_feed( $feeds = '' ) { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_feed( $feeds ); } /** * Is the query for a comments feed? * * @since 3.0.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_comment_feed() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_comment_feed(); } /** * Is the query for the front page of the site? * * This is for what is displayed at your site's main URL. * * Depends on the site's "Front page displays" Reading Settings 'show_on_front' and 'page_on_front'. * * If you set a static page for the front page of your site, this function will return * true when viewing that page. * * Otherwise the same as @see is_home() * * @since 2.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool True, if front of site. */ function is_front_page() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_front_page(); } /** * Determines if the query is for the blog homepage. * * The blog homepage is the page that shows the time-based blog content of the site. * * is_home() is dependent on the site's "Front page displays" Reading Settings 'show_on_front' * and 'page_for_posts'. * * If a static page is set for the front page of the site, this function will return true only * on the page you set as the "Posts page". * * @since 1.5.0 * * @see is_front_page() * @global WP_Query $wp_query Global WP_Query instance. * * @return bool True if blog view homepage, otherwise false. */ function is_home() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_home(); } /** * Is the query for an existing month archive? * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_month() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_month(); } /** * Is the query for an existing single page? * * If the $page parameter is specified, this function will additionally * check if the query is for one of the pages specified. * * @see is_single() * @see is_singular() * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @param int|string|array $page Optional. Page ID, title, slug, or array of such. Default empty. * @return bool Whether the query is for an existing single page. */ function is_page( $page = '' ) { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_page( $page ); } /** * Is the query for paged result and not for the first page? * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_paged() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_paged(); } /** * Is the query for a post or page preview? * * @since 2.0.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_preview() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_preview(); } /** * Is the query for the robots file? * * @since 2.1.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_robots() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_robots(); } /** * Is the query for a search? * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_search() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_search(); } /** * Is the query for an existing single post? * * Works for any post type, except attachments and pages * * If the $post parameter is specified, this function will additionally * check if the query is for one of the Posts specified. * * @see is_page() * @see is_singular() * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @param int|string|array $post Optional. Post ID, title, slug, or array of such. Default empty. * @return bool Whether the query is for an existing single post. */ function is_single( $post = '' ) { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_single( $post ); } /** * Is the query for an existing single post of any post type (post, attachment, page, * custom post types)? * * If the $post_types parameter is specified, this function will additionally * check if the query is for one of the Posts Types specified. * * @see is_page() * @see is_single() * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @param string|array $post_types Optional. Post type or array of post types. Default empty. * @return bool Whether the query is for an existing single post of any of the given post types. */ function is_singular( $post_types = '' ) { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_singular( $post_types ); } /** * Is the query for a specific time? * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_time() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_time(); } /** * Is the query for a trackback endpoint call? * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_trackback() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_trackback(); } /** * Is the query for an existing year archive? * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_year() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_year(); } /** * Is the query a 404 (returns no results)? * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_404() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_404(); } /** * Is the query for an embedded post? * * @since 4.4.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool Whether we're in an embedded post or not. */ function is_embed() { global $wp_query; if ( ! isset( $wp_query ) ) { _doing_it_wrong( __FUNCTION__, __( 'Conditional query tags do not work before the query is run. Before then, they always return false.' ), '3.1.0' ); return false; } return $wp_query->is_embed(); } /** * Is the query the main query? * * @since 3.3.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function is_main_query() { if ( 'pre_get_posts' === current_filter() ) { $message = sprintf( /* translators: 1: pre_get_posts 2: WP_Query->is_main_query() 3: is_main_query() 4: link to codex is_main_query() page. */ __( 'In %1$s, use the %2$s method, not the %3$s function. See %4$s.' ), 'pre_get_posts', 'WP_Query->is_main_query()', 'is_main_query()', __( 'https://codex.wordpress.org/Function_Reference/is_main_query' ) ); _doing_it_wrong( __FUNCTION__, $message, '3.7.0' ); } global $wp_query; return $wp_query->is_main_query(); } /* * The Loop. Post loop control. */ /** * Whether current WordPress query has results to loop over. * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function have_posts() { global $wp_query; return $wp_query->have_posts(); } /** * Whether the caller is in the Loop. * * @since 2.0.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool True if caller is within loop, false if loop hasn't started or ended. */ function in_the_loop() { global $wp_query; return $wp_query->in_the_loop; } /** * Rewind the loop posts. * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. */ function rewind_posts() { global $wp_query; $wp_query->rewind_posts(); } /** * Iterate the post index in the loop. * * @since 1.5.0 * * @global WP_Query $wp_query Global WP_Query instance. */ function the_post() { global $wp_query; $wp_query->the_post(); } /* * Comments loop. */ /** * Whether there are comments to loop over. * * @since 2.2.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return bool */ function have_comments() { global $wp_query; return $wp_query->have_comments(); } /** * Iterate comment index in the comment loop. * * @since 2.2.0 * * @global WP_Query $wp_query Global WP_Query instance. * * @return object */ function the_comment() { global $wp_query; return $wp_query->the_comment(); } /** * Redirect old slugs to the correct permalink. * * Attempts to find the current slug from the past slugs. * * @since 2.1.0 */ function wp_old_slug_redirect() { if ( is_404() && '' !== get_query_var( 'name' ) ) { // Guess the current post_type based on the query vars. if ( get_query_var( 'post_type' ) ) { $post_type = get_query_var( 'post_type' ); } elseif ( get_query_var( 'attachment' ) ) { $post_type = 'attachment'; } elseif ( get_query_var( 'pagename' ) ) { $post_type = 'page'; } else { $post_type = 'post'; } if ( is_array( $post_type ) ) { if ( count( $post_type ) > 1 ) { return; } $post_type = reset( $post_type ); } // Do not attempt redirect for hierarchical post types if ( is_post_type_hierarchical( $post_type ) ) { return; } $id = _find_post_by_old_slug( $post_type ); if ( ! $id ) { $id = _find_post_by_old_date( $post_type ); } /** * Filters the old slug redirect post ID. * * @since 4.9.3 * * @param string $id The redirect post ID. */ $id = apply_filters( 'old_slug_redirect_post_id', $id ); if ( ! $id ) { return; } $link = get_permalink( $id ); if ( get_query_var( 'paged' ) > 1 ) { $link = user_trailingslashit( trailingslashit( $link ) . 'page/' . get_query_var( 'paged' ) ); } elseif( is_embed() ) { $link = user_trailingslashit( trailingslashit( $link ) . 'embed' ); } /** * Filters the old slug redirect URL. * * @since 4.4.0 * * @param string $link The redirect URL. */ $link = apply_filters( 'old_slug_redirect_url', $link ); if ( ! $link ) { return; } wp_redirect( $link, 301 ); // Permanent redirect exit; } } /** * Find the post ID for redirecting an old slug. * * @see wp_old_slug_redirect() * * @since 4.9.3 * @access private * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $post_type The current post type based on the query vars. * @return int $id The Post ID. */ function _find_post_by_old_slug( $post_type ) { global $wpdb; $query = $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta, $wpdb->posts WHERE ID = post_id AND post_type = %s AND meta_key = '_wp_old_slug' AND meta_value = %s", $post_type, get_query_var( 'name' ) ); // if year, monthnum, or day have been specified, make our query more precise // just in case there are multiple identical _wp_old_slug values if ( get_query_var( 'year' ) ) { $query .= $wpdb->prepare( " AND YEAR(post_date) = %d", get_query_var( 'year' ) ); } if ( get_query_var( 'monthnum' ) ) { $query .= $wpdb->prepare( " AND MONTH(post_date) = %d", get_query_var( 'monthnum' ) ); } if ( get_query_var( 'day' ) ) { $query .= $wpdb->prepare( " AND DAYOFMONTH(post_date) = %d", get_query_var( 'day' ) ); } $id = (int) $wpdb->get_var( $query ); return $id; } /** * Find the post ID for redirecting an old date. * * @see wp_old_slug_redirect() * * @since 4.9.3 * @access private * * @global wpdb $wpdb WordPress database abstraction object. * * @param string $post_type The current post type based on the query vars. * @return int $id The Post ID. */ function _find_post_by_old_date( $post_type ) { global $wpdb; $date_query = ''; if ( get_query_var( 'year' ) ) { $date_query .= $wpdb->prepare( " AND YEAR(pm_date.meta_value) = %d", get_query_var( 'year' ) ); } if ( get_query_var( 'monthnum' ) ) { $date_query .= $wpdb->prepare( " AND MONTH(pm_date.meta_value) = %d", get_query_var( 'monthnum' ) ); } if ( get_query_var( 'day' ) ) { $date_query .= $wpdb->prepare( " AND DAYOFMONTH(pm_date.meta_value) = %d", get_query_var( 'day' ) ); } $id = 0; if ( $date_query ) { $id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT post_id FROM $wpdb->postmeta AS pm_date, $wpdb->posts WHERE ID = post_id AND post_type = %s AND meta_key = '_wp_old_date' AND post_name = %s" . $date_query, $post_type, get_query_var( 'name' ) ) ); if ( ! $id ) { // Check to see if an old slug matches the old date $id = (int) $wpdb->get_var( $wpdb->prepare( "SELECT ID FROM $wpdb->posts, $wpdb->postmeta AS pm_slug, $wpdb->postmeta AS pm_date WHERE ID = pm_slug.post_id AND ID = pm_date.post_id AND post_type = %s AND pm_slug.meta_key = '_wp_old_slug' AND pm_slug.meta_value = %s AND pm_date.meta_key = '_wp_old_date'" . $date_query, $post_type, get_query_var( 'name' ) ) ); } } return $id; } /** * Set up global post data. * * @since 1.5.0 * @since 4.4.0 Added the ability to pass a post ID to `$post`. * * @global WP_Query $wp_query Global WP_Query instance. * * @param WP_Post|object|int $post WP_Post instance or Post ID/object. * @return bool True when finished. */ function setup_postdata( $post ) { global $wp_query; if ( ! empty( $wp_query ) && $wp_query instanceof WP_Query ) { return $wp_query->setup_postdata( $post ); } return false; }