if ( is_int( $post ) ) { $parent_post_ids[] = $post; } } _prime_post_caches( $parent_post_ids, false, true ); foreach ( $wp_query->posts as $post ) { $id = get_post_thumbnail_id( $post ); if ( $id ) { $thumb_ids[] = $id; } } if ( ! empty( $thumb_ids ) ) { _prime_post_caches( $thumb_ids, false, true ); } $wp_query->thumbnails_cached = true; } /** * Retrieves the post thumbnail. * * When a theme adds 'post-thumbnail' support, a special 'post-thumbnail' image size * is registered, which differs from the 'thumbnail' image size managed via the * Settings > Media screen. * * When using the_post_thumbnail() or related functions, the 'post-thumbnail' image * size is used by default, though a different size can be specified instead as needed. * * @since 2.9.0 * @since 4.4.0 `$post` can be a post ID or WP_Post object. * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`. * @param string|int[] $size Optional. Image size. Accepts any registered image size name, or an array of * width and height values in pixels (in that order). Default 'post-thumbnail'. * @param string|array $attr Optional. Query string or array of attributes. Default empty. * @return string The post thumbnail image tag. */ function get_the_post_thumbnail( $post = null, $size = 'post-thumbnail', $attr = '' ) { $post = get_post( $post ); if ( ! $post ) { return ''; } $post_thumbnail_id = get_post_thumbnail_id( $post ); /** * Filters the post thumbnail size. * * @since 2.9.0 * @since 4.9.0 Added the `$post_id` parameter. * * @param string|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). * @param int $post_id The post ID. */ $size = apply_filters( 'post_thumbnail_size', $size, $post->ID ); if ( $post_thumbnail_id ) { /** * Fires before fetching the post thumbnail HTML. * * Provides "just in time" filtering of all filters in wp_get_attachment_image(). * * @since 2.9.0 * * @param int $post_id The post ID. * @param int $post_thumbnail_id The post thumbnail ID. * @param string|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). */ do_action( 'begin_fetch_post_thumbnail_html', $post->ID, $post_thumbnail_id, $size ); if ( in_the_loop() ) { update_post_thumbnail_cache(); } $html = wp_get_attachment_image( $post_thumbnail_id, $size, false, $attr ); /** * Fires after fetching the post thumbnail HTML. * * @since 2.9.0 * * @param int $post_id The post ID. * @param int $post_thumbnail_id The post thumbnail ID. * @param string|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). */ do_action( 'end_fetch_post_thumbnail_html', $post->ID, $post_thumbnail_id, $size ); } else { $html = ''; } /** * Filters the post thumbnail HTML. * * @since 2.9.0 * * @param string $html The post thumbnail HTML. * @param int $post_id The post ID. * @param int $post_thumbnail_id The post thumbnail ID, or 0 if there isn't one. * @param string|int[] $size Requested image size. Can be any registered image size name, or * an array of width and height values in pixels (in that order). * @param string|array $attr Query string or array of attributes. */ return apply_filters( 'post_thumbnail_html', $html, $post->ID, $post_thumbnail_id, $size, $attr ); } /** * Returns the post thumbnail URL. * * @since 4.4.0 * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`. * @param string|int[] $size Optional. Registered image size to retrieve the source for or a flat array * of height and width dimensions. Default 'post-thumbnail'. * @return string|false Post thumbnail URL or false if no image is available. If `$size` does not match * any registered image size, the original image URL will be returned. */ function get_the_post_thumbnail_url( $post = null, $size = 'post-thumbnail' ) { $post_thumbnail_id = get_post_thumbnail_id( $post ); if ( ! $post_thumbnail_id ) { return false; } $thumbnail_url = wp_get_attachment_image_url( $post_thumbnail_id, $size ); /** * Filters the post thumbnail URL. * * @since 5.9.0 * * @param string|false $thumbnail_url Post thumbnail URL or false if the post does not exist. * @param int|WP_Post|null $post Post ID or WP_Post object. Default is global `$post`. * @param string|int[] $size Registered image size to retrieve the source for or a flat array * of height and width dimensions. Default 'post-thumbnail'. */ return apply_filters( 'post_thumbnail_url', $thumbnail_url, $post, $size ); } /** * Displays the post thumbnail URL. * * @since 4.4.0 * * @param string|int[] $size Optional. Image size to use. Accepts any valid image size, * or an array of width and height values in pixels (in that order). * Default 'post-thumbnail'. */ function the_post_thumbnail_url( $size = 'post-thumbnail' ) { $url = get_the_post_thumbnail_url( null, $size ); if ( $url ) { echo esc_url( $url ); } } /** * Returns the post thumbnail caption. * * @since 4.6.0 * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`. * @return string Post thumbnail caption. */ function get_the_post_thumbnail_caption( $post = null ) { $post_thumbnail_id = get_post_thumbnail_id( $post ); if ( ! $post_thumbnail_id ) { return ''; } $caption = wp_get_attachment_caption( $post_thumbnail_id ); if ( ! $caption ) { $caption = ''; } return $caption; } /** * Displays the post thumbnail caption. * * @since 4.6.0 * * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`. */ function the_post_thumbnail_caption( $post = null ) { /** * Filters the displayed post thumbnail caption. * * @since 4.6.0 * * @param string $caption Caption for the given attachment. */ echo apply_filters( 'the_post_thumbnail_caption', get_the_post_thumbnail_caption( $post ) ); } ly. Default OBJECT. * @return WP_Term|array|WP_Error|null Type is based on $output value. */ function get_category_by_path( $category_path, $full_match = true, $output = OBJECT ) { $category_path = rawurlencode( urldecode( $category_path ) ); $category_path = str_replace( '%2F', '/', $category_path ); $category_path = str_replace( '%20', ' ', $category_path ); $category_paths = '/' . trim( $category_path, '/' ); $leaf_path = sanitize_title( basename( $category_paths ) ); $category_paths = explode( '/', $category_paths ); $full_path = ''; foreach ( (array) $category_paths as $pathdir ) { $full_path .= ( '' !== $pathdir ? '/' : '' ) . sanitize_title( $pathdir ); } $categories = get_terms( array( 'taxonomy' => 'category', 'get' => 'all', 'slug' => $leaf_path, ) ); if ( empty( $categories ) ) { return; } foreach ( $categories as $category ) { $path = '/' . $leaf_path; $curcategory = $category; while ( ( 0 !== $curcategory->parent ) && ( $curcategory->parent !== $curcategory->term_id ) ) { $curcategory = get_term( $curcategory->parent, 'category' ); if ( is_wp_error( $curcategory ) ) { return $curcategory; } $path = '/' . $curcategory->slug . $path; } if ( $path === $full_path ) { $category = get_term( $category->term_id, 'category', $output ); _make_cat_compat( $category ); return $category; } } // If full matching is not required, return the first cat that matches the leaf. if ( ! $full_match ) { $category = get_term( reset( $categories )->term_id, 'category', $output ); _make_cat_compat( $category ); return $category; } } /** * Retrieves a category object by category slug. * * @since 2.3.0 * * @param string $slug The category slug. * @return object|false Category data object on success, false if not found. */ function get_category_by_slug( $slug ) { $category = get_term_by( 'slug', $slug, 'category' ); if ( $category ) { _make_cat_compat( $category ); } return $category; } /** * Retrieves the ID of a category from its name. * * @since 1.0.0 * * @param string $cat_name Category name. * @return int Category ID on success, 0 if the category doesn't exist. */ function get_cat_ID( $cat_name ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid $cat = get_term_by( 'name', $cat_name, 'category' ); if ( $cat ) { return $cat->term_id; } return 0; } /** * Retrieves the name of a category from its ID. * * @since 1.0.0 * * @param int $cat_id Category ID. * @return string Category name, or an empty string if the category doesn't exist. */ function get_cat_name( $cat_id ) { $cat_id = (int) $cat_id; $category = get_term( $cat_id, 'category' ); if ( ! $category || is_wp_error( $category ) ) { return ''; } return $category->name; } /** * Checks if a category is an ancestor of another category. * * You can use either an ID or the category object for both parameters. * If you use an integer, the category will be retrieved. * * @since 2.1.0 * * @param int|object $cat1 ID or object to check if this is the parent category. * @param int|object $cat2 The child category. * @return bool Whether $cat2 is child of $cat1. */ function cat_is_ancestor_of( $cat1, $cat2 ) { return term_is_ancestor_of( $cat1, $cat2, 'category' ); } /** * Sanitizes category data based on context. * * @since 2.3.0 * * @param object|array $category Category data. * @param string $context Optional. Default 'display'. * @return object|array Same type as $category with sanitized data for safe use. */ function sanitize_category( $category, $context = 'display' ) { return sanitize_term( $category, 'category', $context ); } /** * Sanitizes data in single category key field. * * @since 2.3.0 * * @param string $field Category key to sanitize. * @param mixed $value Category value to sanitize. * @param int $cat_id Category ID. * @param string $context What filter to use, 'raw', 'display', etc. * @return mixed Value after $value has been sanitized. */ function sanitize_category_field( $field, $value, $cat_id, $context ) { return sanitize_term_field( $field, $value, $cat_id, 'category', $context ); } /* Tags */ /** * Retrieves all post tags. * * @since 2.3.0 * * @param string|array $args { * Optional. Arguments to retrieve tags. See get_terms() for additional options. * * @type string $taxonomy Taxonomy to retrieve terms for. Default 'post_tag'. * } * @return WP_Term[]|int|WP_Error Array of 'post_tag' term objects, a count thereof, * or WP_Error if any of the taxonomies do not exist. */ function get_tags( $args = '' ) { $defaults = array( 'taxonomy' => 'post_tag' ); $args = wp_parse_args( $args, $defaults ); $tags = get_terms( $args ); if ( empty( $tags ) ) { $tags = array(); } else { /** * Filters the array of term objects returned for the 'post_tag' taxonomy. * * @since 2.3.0 * * @param WP_Term[]|int|WP_Error $tags Array of 'post_tag' term objects, a count thereof, * or WP_Error if any of the taxonomies do not exist. * @param array $args An array of arguments. See {@see get_terms()}. */ $tags = apply_filters( 'get_tags', $tags, $args ); } return $tags; } /** * Retrieves a post tag by tag ID or tag object. * * If you pass the $tag parameter an object, which is assumed to be the tag row * object retrieved from the database, it will cache the tag data. * * If you pass $tag an integer of the tag ID, then that tag will be retrieved * from the database, if it isn't already cached, and passed back. * * If you look at get_term(), both types will be passed through several filters * and finally sanitized based on the $filter parameter value. * * @since 2.3.0 * * @param int|WP_Term|object $tag A tag ID or object. * @param string $output Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which * correspond to a WP_Term object, an associative array, or a numeric array, * respectively. Default OBJECT. * @param string $filter Optional. How to sanitize tag fields. Default 'raw'. * @return WP_Term|array|WP_Error|null Tag data in type defined by $output parameter. * WP_Error if $tag is empty, null if it does not exist. */ function get_tag( $tag, $output = OBJECT, $filter = 'raw' ) { return get_term( $tag, 'post_tag', $output, $filter ); } /* Cache */ /** * Removes the category cache data based on ID. * * @since 2.1.0 * * @param int $id Category ID */ function clean_category_cache( $id ) { clean_term_cache( $id, 'category' ); } /** * Updates category structure to old pre-2.3 from new taxonomy structure. * * This function was added for the taxonomy support to update the new category * structure with the old category one. This will maintain compatibility with * plugins and themes which depend on the old key or property names. * * The parameter should only be passed a variable and not create the array or * object inline to the parameter. The reason for this is that parameter is * passed by reference and PHP will fail unless it has the variable. * * There is no return value, because everything is updated on the variable you * pass to it. This is one of the features with using pass by reference in PHP. * * @since 2.3.0 * @since 4.4.0 The `$category` parameter now also accepts a WP_Term object. * @access private * * @param array|object|WP_Term $category Category row object or array. */ function _make_cat_compat( &$category ) { if ( is_object( $category ) && ! is_wp_error( $category ) ) { $category->cat_ID = $category->term_id; $category->category_count = $category->count; $category->category_description = $category->description; $category->cat_name = $category->name; $category->category_nicename = $category->slug; $category->category_parent = $category->parent; } elseif ( is_array( $category ) && isset( $category['term_id'] ) ) { $category['cat_ID'] = &$category['term_id']; $category['category_count'] = &$category['count']; $category['category_description'] = &$category['description']; $category['cat_name'] = &$category['name']; $category['category_nicename'] = &$category['slug']; $category['category_parent'] = &$category['parent']; } }