=== $args['orderby'] ) {
uasort( $tags, '_wp_object_name_sort_cb' );
} else {
uasort( $tags, '_wp_object_count_sort_cb' );
}
if ( 'DESC' === $args['order'] ) {
$tags = array_reverse( $tags, true );
}
}
}
if ( $args['number'] > 0 ) {
$tags = array_slice( $tags, 0, $args['number'] );
}
$counts = array();
$real_counts = array(); // For the alt tag.
foreach ( (array) $tags as $key => $tag ) {
$real_counts[ $key ] = $tag->count;
$counts[ $key ] = call_user_func( $args['topic_count_scale_callback'], $tag->count );
}
$min_count = min( $counts );
$spread = max( $counts ) - $min_count;
if ( $spread <= 0 ) {
$spread = 1;
}
$font_spread = $args['largest'] - $args['smallest'];
if ( $font_spread < 0 ) {
$font_spread = 1;
}
$font_step = $font_spread / $spread;
$aria_label = false;
/*
* Determine whether to output an 'aria-label' attribute with the tag name and count.
* When tags have a different font size, they visually convey an important information
* that should be available to assistive technologies too. On the other hand, sometimes
* themes set up the Tag Cloud to display all tags with the same font size (setting
* the 'smallest' and 'largest' arguments to the same value).
* In order to always serve the same content to all users, the 'aria-label' gets printed out:
* - when tags have a different size
* - when the tag count is displayed (for example when users check the checkbox in the
* Tag Cloud widget), regardless of the tags font size
*/
if ( $args['show_count'] || 0 !== $font_spread ) {
$aria_label = true;
}
// Assemble the data that will be used to generate the tag cloud markup.
$tags_data = array();
foreach ( $tags as $key => $tag ) {
$tag_id = isset( $tag->id ) ? $tag->id : $key;
$count = $counts[ $key ];
$real_count = $real_counts[ $key ];
if ( $translate_nooped_plural ) {
$formatted_count = sprintf( translate_nooped_plural( $translate_nooped_plural, $real_count ), number_format_i18n( $real_count ) );
} else {
$formatted_count = call_user_func( $args['topic_count_text_callback'], $real_count, $tag, $args );
}
$tags_data[] = array(
'id' => $tag_id,
'url' => ( '#' !== $tag->link ) ? $tag->link : '#',
'role' => ( '#' !== $tag->link ) ? '' : ' role="button"',
'name' => $tag->name,
'formatted_count' => $formatted_count,
'slug' => $tag->slug,
'real_count' => $real_count,
'class' => 'tag-cloud-link tag-link-' . $tag_id,
'font_size' => $args['smallest'] + ( $count - $min_count ) * $font_step,
'aria_label' => $aria_label ? sprintf( ' aria-label="%1$s (%2$s)"', esc_attr( $tag->name ), esc_attr( $formatted_count ) ) : '',
'show_count' => $args['show_count'] ? ' (' . $real_count . ')' : '',
);
}
/**
* Filters the data used to generate the tag cloud.
*
* @since 4.3.0
*
* @param array[] $tags_data An array of term data arrays for terms used to generate the tag cloud.
*/
$tags_data = apply_filters( 'wp_generate_tag_cloud_data', $tags_data );
$a = array();
// Generate the output links array.
foreach ( $tags_data as $key => $tag_data ) {
$class = $tag_data['class'] . ' tag-link-position-' . ( $key + 1 );
$a[] = sprintf(
'%6$s%7$s',
esc_url( $tag_data['url'] ),
$tag_data['role'],
esc_attr( $class ),
esc_attr( str_replace( ',', '.', $tag_data['font_size'] ) . $args['unit'] ),
$tag_data['aria_label'],
esc_html( $tag_data['name'] ),
$tag_data['show_count']
);
}
switch ( $args['format'] ) {
case 'array':
$return =& $a;
break;
case 'list':
/*
* Force role="list", as some browsers (sic: Safari 10) don't expose to assistive
* technologies the default role when the list is styled with `list-style: none`.
* Note: this is redundant but doesn't harm.
*/
$return = "
\n\t
";
$return .= implode( "
\n\t
", $a );
$return .= "
\n
\n";
break;
default:
$return = implode( $args['separator'], $a );
break;
}
if ( $args['filter'] ) {
/**
* Filters the generated output of a tag cloud.
*
* The filter is only evaluated if a true value is passed
* to the $filter argument in wp_generate_tag_cloud().
*
* @since 2.3.0
*
* @see wp_generate_tag_cloud()
*
* @param string[]|string $return String containing the generated HTML tag cloud output
* or an array of tag links if the 'format' argument
* equals 'array'.
* @param WP_Term[] $tags An array of terms used in the tag cloud.
* @param array $args An array of wp_generate_tag_cloud() arguments.
*/
return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args );
} else {
return $return;
}
}
/**
* Serves as a callback for comparing objects based on name.
*
* Used with `uasort()`.
*
* @since 3.1.0
* @access private
*
* @param object $a The first object to compare.
* @param object $b The second object to compare.
* @return int Negative number if `$a->name` is less than `$b->name`, zero if they are equal,
* or greater than zero if `$a->name` is greater than `$b->name`.
*/
function _wp_object_name_sort_cb( $a, $b ) {
return strnatcasecmp( $a->name, $b->name );
}
/**
* Serves as a callback for comparing objects based on count.
*
* Used with `uasort()`.
*
* @since 3.1.0
* @access private
*
* @param object $a The first object to compare.
* @param object $b The second object to compare.
* @return int Negative number if `$a->count` is less than `$b->count`, zero if they are equal,
* or greater than zero if `$a->count` is greater than `$b->count`.
*/
function _wp_object_count_sort_cb( $a, $b ) {
return ( $a->count - $b->count );
}
//
// Helper functions.
//
/**
* Retrieves HTML list content for category list.
*
* @since 2.1.0
* @since 5.3.0 Formalized the existing `...$args` parameter by adding it
* to the function signature.
*
* @uses Walker_Category to create HTML list content.
* @see Walker::walk() for parameters and return description.
*
* @param mixed ...$args Elements array, maximum hierarchical depth and optional additional arguments.
* @return string
*/
function walk_category_tree( ...$args ) {
// The user's options are the third parameter.
if ( empty( $args[2]['walker'] ) || ! ( $args[2]['walker'] instanceof Walker ) ) {
$walker = new Walker_Category();
} else {
/**
* @var Walker $walker
*/
$walker = $args[2]['walker'];
}
return $walker->walk( ...$args );
}
/**
* Retrieves HTML dropdown (select) content for category list.
*
* @since 2.1.0
* @since 5.3.0 Formalized the existing `...$args` parameter by adding it
* to the function signature.
*
* @uses Walker_CategoryDropdown to create HTML dropdown content.
* @see Walker::walk() for parameters and return description.
*
* @param mixed ...$args Elements array, maximum hierarchical depth and optional additional arguments.
* @return string
*/
function walk_category_dropdown_tree( ...$args ) {
// The user's options are the third parameter.
if ( empty( $args[2]['walker'] ) || ! ( $args[2]['walker'] instanceof Walker ) ) {
$walker = new Walker_CategoryDropdown();
} else {
/**
* @var Walker $walker
*/
$walker = $args[2]['walker'];
}
return $walker->walk( ...$args );
}
//
// Tags.
//
/**
* Retrieves the link to the tag.
*
* @since 2.3.0
*
* @see get_term_link()
*
* @param int|object $tag Tag ID or object.
* @return string Link on success, empty string if tag does not exist.
*/
function get_tag_link( $tag ) {
return get_category_link( $tag );
}
/**
* Retrieves the tags for a post.
*
* @since 2.3.0
*
* @param int|WP_Post $post Post ID or object.
* @return WP_Term[]|false|WP_Error Array of WP_Term objects on success, false if there are no terms
* or the post does not exist, WP_Error on failure.
*/
function get_the_tags( $post = 0 ) {
$terms = get_the_terms( $post, 'post_tag' );
/**
* Filters the array of tags for the given post.
*
* @since 2.3.0
*
* @see get_the_terms()
*
* @param WP_Term[]|false|WP_Error $terms Array of WP_Term objects on success, false if there are no terms
* or the post does not exist, WP_Error on failure.
*/
return apply_filters( 'get_the_tags', $terms );
}
/**
* Retrieves the tags for a post formatted as a string.
*
* @since 2.3.0
*
* @param string $before Optional. String to use before the tags. Default empty.
* @param string $sep Optional. String to use between the tags. Default empty.
* @param string $after Optional. String to use after the tags. Default empty.
* @param int $post_id Optional. Post ID. Defaults to the current post ID.
* @return string|false|WP_Error A list of tags on success, false if there are no terms,
* WP_Error on failure.
*/
function get_the_tag_list( $before = '', $sep = '', $after = '', $post_id = 0 ) {
$tag_list = get_the_term_list( $post_id, 'post_tag', $before, $sep, $after );
/**
* Filters the tags list for a given post.
*
* @since 2.3.0
*
* @param string $tag_list List of tags.
* @param string $before String to use before the tags.
* @param string $sep String to use between the tags.
* @param string $after String to use after the tags.
* @param int $post_id Post ID.
*/
return apply_filters( 'the_tags', $tag_list, $before, $sep, $after, $post_id );
}
/**
* Displays the tags for a post.
*
* @since 2.3.0
*
* @param string $before Optional. String to use before the tags. Defaults to 'Tags:'.
* @param string $sep Optional. String to use between the tags. Default ', '.
* @param string $after Optional. String to use after the tags. Default empty.
*/
function the_tags( $before = null, $sep = ', ', $after = '' ) {
if ( null === $before ) {
$before = __( 'Tags: ' );
}
$the_tags = get_the_tag_list( $before, $sep, $after );
if ( ! is_wp_error( $the_tags ) ) {
echo $the_tags;
}
}
/**
* Retrieves tag description.
*
* @since 2.8.0
*
* @param int $tag Optional. Tag ID. Defaults to the current tag ID.
* @return string Tag description, if available.
*/
function tag_description( $tag = 0 ) {
return term_description( $tag );
}
/**
* Retrieves term description.
*
* @since 2.8.0
* @since 4.9.2 The `$taxonomy` parameter was deprecated.
*
* @param int $term Optional. Term ID. Defaults to the current term ID.
* @param null $deprecated Deprecated. Not used.
* @return string Term description, if available.
*/
function term_description( $term = 0, $deprecated = null ) {
if ( ! $term && ( is_tax() || is_tag() || is_category() ) ) {
$term = get_queried_object();
if ( $term ) {
$term = $term->term_id;
}
}
$description = get_term_field( 'description', $term );
return is_wp_error( $description ) ? '' : $description;
}
/**
* Retrieves the terms of the taxonomy that are attached to the post.
*
* @since 2.5.0
*
* @param int|WP_Post $post Post ID or object.
* @param string $taxonomy Taxonomy name.
* @return WP_Term[]|false|WP_Error Array of WP_Term objects on success, false if there are no terms
* or the post does not exist, WP_Error on failure.
*/
function get_the_terms( $post, $taxonomy ) {
$post = get_post( $post );
if ( ! $post ) {
return false;
}
$terms = get_object_term_cache( $post->ID, $taxonomy );
if ( false === $terms ) {
$terms = wp_get_object_terms( $post->ID, $taxonomy );
if ( ! is_wp_error( $terms ) ) {
$term_ids = wp_list_pluck( $terms, 'term_id' );
wp_cache_add( $post->ID, $term_ids, $taxonomy . '_relationships' );
}
}
/**
* Filters the list of terms attached to the given post.
*
* @since 3.1.0
*
* @param WP_Term[]|WP_Error $terms Array of attached terms, or WP_Error on failure.
* @param int $post_id Post ID.
* @param string $taxonomy Name of the taxonomy.
*/
$terms = apply_filters( 'get_the_terms', $terms, $post->ID, $taxonomy );
if ( empty( $terms ) ) {
return false;
}
return $terms;
}
/**
* Retrieves a post's terms as a list with specified format.
*
* Terms are linked to their respective term listing pages.
*
* @since 2.5.0
*
* @param int $post_id Post ID.
* @param string $taxonomy Taxonomy name.
* @param string $before Optional. String to use before the terms. Default empty.
* @param string $sep Optional. String to use between the terms. Default empty.
* @param string $after Optional. String to use after the terms. Default empty.
* @return string|false|WP_Error A list of terms on success, false if there are no terms,
* WP_Error on failure.
*/
function get_the_term_list( $post_id, $taxonomy, $before = '', $sep = '', $after = '' ) {
$terms = get_the_terms( $post_id, $taxonomy );
if ( is_wp_error( $terms ) ) {
return $terms;
}
if ( empty( $terms ) ) {
return false;
}
$links = array();
foreach ( $terms as $term ) {
$link = get_term_link( $term, $taxonomy );
if ( is_wp_error( $link ) ) {
return $link;
}
$links[] = '' . $term->name . '';
}
/**
* Filters the term links for a given taxonomy.
*
* The dynamic portion of the hook name, `$taxonomy`, refers
* to the taxonomy slug.
*
* Possible hook names include:
*
* - `term_links-category`
* - `term_links-post_tag`
* - `term_links-post_format`
*
* @since 2.5.0
*
* @param string[] $links An array of term links.
*/
$term_links = apply_filters( "term_links-{$taxonomy}", $links ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
return $before . implode( $sep, $term_links ) . $after;
}
/**
* Retrieves term parents with separator.
*
* @since 4.8.0
*
* @param int $term_id Term ID.
* @param string $taxonomy Taxonomy name.
* @param string|array $args {
* Array of optional arguments.
*
* @type string $format Use term names or slugs for display. Accepts 'name' or 'slug'.
* Default 'name'.
* @type string $separator Separator for between the terms. Default '/'.
* @type bool $link Whether to format as a link. Default true.
* @type bool $inclusive Include the term to get the parents for. Default true.
* }
* @return string|WP_Error A list of term parents on success, WP_Error or empty string on failure.
*/
function get_term_parents_list( $term_id, $taxonomy, $args = array() ) {
$list = '';
$term = get_term( $term_id, $taxonomy );
if ( is_wp_error( $term ) ) {
return $term;
}
if ( ! $term ) {
return $list;
}
$term_id = $term->term_id;
$defaults = array(
'format' => 'name',
'separator' => '/',
'link' => true,
'inclusive' => true,
);
$args = wp_parse_args( $args, $defaults );
foreach ( array( 'link', 'inclusive' ) as $bool ) {
$args[ $bool ] = wp_validate_boolean( $args[ $bool ] );
}
$parents = get_ancestors( $term_id, $taxonomy, 'taxonomy' );
if ( $args['inclusive'] ) {
array_unshift( $parents, $term_id );
}
foreach ( array_reverse( $parents ) as $term_id ) {
$parent = get_term( $term_id, $taxonomy );
$name = ( 'slug' === $args['format'] ) ? $parent->slug : $parent->name;
if ( $args['link'] ) {
$list .= '' . $name . '' . $args['separator'];
} else {
$list .= $name . $args['separator'];
}
}
return $list;
}
/**
* Displays the terms for a post in a list.
*
* @since 2.5.0
*
* @param int $post_id Post ID.
* @param string $taxonomy Taxonomy name.
* @param string $before Optional. String to use before the terms. Default empty.
* @param string $sep Optional. String to use between the terms. Default ', '.
* @param string $after Optional. String to use after the terms. Default empty.
* @return void|false Void on success, false on failure.
*/
function the_terms( $post_id, $taxonomy, $before = '', $sep = ', ', $after = '' ) {
$term_list = get_the_term_list( $post_id, $taxonomy, $before, $sep, $after );
if ( is_wp_error( $term_list ) ) {
return false;
}
/**
* Filters the list of terms to display.
*
* @since 2.9.0
*
* @param string $term_list List of terms to display.
* @param string $taxonomy The taxonomy name.
* @param string $before String to use before the terms.
* @param string $sep String to use between the terms.
* @param string $after String to use after the terms.
*/
echo apply_filters( 'the_terms', $term_list, $taxonomy, $before, $sep, $after );
}
/**
* Checks if the current post has any of given category.
*
* The given categories are checked against the post's categories' term_ids, names and slugs.
* Categories given as integers will only be checked against the post's categories' term_ids.
*
* If no categories are given, determines if post has any categories.
*
* @since 3.1.0
*
* @param string|int|array $category Optional. The category name/term_id/slug,
* or an array of them to check for. Default empty.
* @param int|WP_Post $post Optional. Post to check. Defaults to the current post.
* @return bool True if the current post has any of the given categories
* (or any category, if no category specified). False otherwise.
*/
function has_category( $category = '', $post = null ) {
return has_term( $category, 'category', $post );
}
/**
* Checks if the current post has any of given tags.
*
* The given tags are checked against the post's tags' term_ids, names and slugs.
* Tags given as integers will only be checked against the post's tags' term_ids.
*
* If no tags are given, determines if post has any tags.
*
* For more information on this and similar theme functions, check out
* the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
* Conditional Tags} article in the Theme Developer Handbook.
*
* @since 2.6.0
* @since 2.7.0 Tags given as integers are only checked against
* the post's tags' term_ids, not names or slugs.
* @since 2.7.0 Can be used outside of the WordPress Loop if `$post` is provided.
*
* @param string|int|array $tag Optional. The tag name/term_id/slug,
* or an array of them to check for. Default empty.
* @param int|WP_Post $post Optional. Post to check. Defaults to the current post.
* @return bool True if the current post has any of the given tags
* (or any tag, if no tag specified). False otherwise.
*/
function has_tag( $tag = '', $post = null ) {
return has_term( $tag, 'post_tag', $post );
}
/**
* Checks if the current post has any of given terms.
*
* The given terms are checked against the post's terms' term_ids, names and slugs.
* Terms given as integers will only be checked against the post's terms' term_ids.
*
* If no terms are given, determines if post has any terms.
*
* @since 3.1.0
*
* @param string|int|array $term Optional. The term name/term_id/slug,
* or an array of them to check for. Default empty.
* @param string $taxonomy Optional. Taxonomy name. Default empty.
* @param int|WP_Post $post Optional. Post to check. Defaults to the current post.
* @return bool True if the current post has any of the given terms
* (or any term, if no term specified). False otherwise.
*/
function has_term( $term = '', $taxonomy = '', $post = null ) {
$post = get_post( $post );
if ( ! $post ) {
return false;
}
$r = is_object_in_term( $post->ID, $taxonomy, $term );
if ( is_wp_error( $r ) ) {
return false;
}
return $r;
}
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