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- <?php
-
- function get_category_children($id, $before = '/', $after = '', $visited=array()) {
- if ( 0 == $id )
- return '';
-
- $chain = '';
- // TODO: consult hierarchy
- $cat_ids = get_all_category_ids();
- foreach ( $cat_ids as $cat_id ) {
- if ( $cat_id == $id )
- continue;
-
- $category = get_category($cat_id);
- if ( is_wp_error( $category ) )
- return $category;
- if ( $category->parent == $id && !in_array($category->term_id, $visited) ) {
- $visited[] = $category->term_id;
- $chain .= $before.$category->term_id.$after;
- $chain .= get_category_children($category->term_id, $before, $after);
- }
- }
- return $chain;
- }
-
- function get_category_link($category_id) {
- global $wp_rewrite;
- $catlink = $wp_rewrite->get_category_permastruct();
-
- if ( empty($catlink) ) {
- $file = get_option('home') . '/';
- $catlink = $file . '?cat=' . $category_id;
- } else {
- $category = &get_category($category_id);
- if ( is_wp_error( $category ) )
- return $category;
- $category_nicename = $category->slug;
-
- if ( $parent = $category->parent )
- $category_nicename = get_category_parents($parent, false, '/', true) . $category_nicename;
-
- $catlink = str_replace('%category%', $category_nicename, $catlink);
- $catlink = get_option('home') . user_trailingslashit($catlink, 'category');
- }
- return apply_filters('category_link', $catlink, $category_id);
- }
-
- function get_category_parents($id, $link = FALSE, $separator = '/', $nicename = FALSE, $visited = array()){
- $chain = '';
- $parent = &get_category($id);
- if ( is_wp_error( $parent ) )
- return $parent;
-
- if ( $nicename )
- $name = $parent->slug;
- else
- $name = $parent->cat_name;
-
- if ( $parent->parent && ($parent->parent != $parent->term_id) && !in_array($parent->parent, $visited) ) {
- $visited[] = $parent->parent;
- $chain .= get_category_parents($parent->parent, $link, $separator, $nicename, $visited);
- }
-
- if ( $link )
- $chain .= '<a href="' . get_category_link($parent->term_id) . '" title="' . sprintf(__("View all posts in %s"), $parent->cat_name) . '">'.$name.'</a>' . $separator;
- else
- $chain .= $name.$separator;
- return $chain;
- }
-
- function get_the_category($id = false) {
- global $post;
-
- $id = (int) $id;
- if ( !$id )
- $id = (int) $post->ID;
-
- $categories = get_object_term_cache($id, 'category');
- if ( false === $categories )
- $categories = wp_get_object_terms($id, 'category');
-
- if ( !empty($categories) )
- usort($categories, '_usort_terms_by_name');
- else
- $categories = array();
-
- foreach(array_keys($categories) as $key) {
- _make_cat_compat($categories[$key]);
- }
-
- return $categories;
- }
-
- function _usort_terms_by_name($a, $b) {
- return strcmp($a->name, $b->name);
- }
-
- function _usort_terms_by_ID($a, $b) {
- if ( $a->term_id > $b->term_id )
- return 1;
- elseif ( $a->term_id < $b->term_id )
- return -1;
- else
- return 0;
- }
-
- function get_the_category_by_ID($cat_ID) {
- $cat_ID = (int) $cat_ID;
- $category = &get_category($cat_ID);
- if ( is_wp_error( $category ) )
- return $category;
- return $category->name;
- }
-
- function get_the_category_list($separator = '', $parents='', $post_id = false) {
- global $wp_rewrite;
- $categories = get_the_category($post_id);
- if (empty($categories))
- return apply_filters('the_category', __('Uncategorized'), $separator, $parents);
-
- $rel = ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) ? 'rel="category tag"' : 'rel="category"';
-
- $thelist = '';
- if ( '' == $separator ) {
- $thelist .= '<ul class="post-categories">';
- foreach ( $categories as $category ) {
- $thelist .= "\n\t<li>";
- switch ( strtolower($parents) ) {
- case 'multiple':
- if ($category->parent)
- $thelist .= get_category_parents($category->parent, TRUE);
- $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->name.'</a></li>';
- break;
- case 'single':
- $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>';
- if ($category->parent)
- $thelist .= get_category_parents($category->parent, FALSE);
- $thelist .= $category->name.'</a></li>';
- break;
- case '':
- default:
- $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->cat_name.'</a></li>';
- }
- }
- $thelist .= '</ul>';
- } else {
- $i = 0;
- foreach ( $categories as $category ) {
- if ( 0 < $i )
- $thelist .= $separator . ' ';
- switch ( strtolower($parents) ) {
- case 'multiple':
- if ( $category->parent )
- $thelist .= get_category_parents($category->parent, TRUE);
- $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->cat_name.'</a>';
- break;
- case 'single':
- $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>';
- if ( $category->parent )
- $thelist .= get_category_parents($category->parent, FALSE);
- $thelist .= "$category->cat_name</a>";
- break;
- case '':
- default:
- $thelist .= '<a href="' . get_category_link($category->term_id) . '" title="' . sprintf(__("View all posts in %s"), $category->name) . '" ' . $rel . '>' . $category->name.'</a>';
- }
- ++$i;
- }
- }
- return apply_filters('the_category', $thelist, $separator, $parents);
- }
-
- /*
- * in_category() - Checks whether the current post is within a particular category
- *
- * This function checks to see if the post is within the supplied category. The categoy
- * can be specified by number or name and will be checked as a name first to allow for categories with numeric names.
- * Note: Prior to v2.5 of WordPress category names where not supported.
- *
- * @since 1.2.0
- *
- * @param int|string $category
- * @return bool true if the post is in the supplied category
- */
- function in_category( $category ) { // Check if the current post is in the given category
- global $post;
-
- if ( empty($category) )
- return false;
-
- // If category is not an int, check to see if it's a name
- if ( ! is_int($category) ) {
- $cat_ID = get_cat_ID($category);
- if ( $cat_ID )
- $category = $cat_ID;
- }
-
- $categories = get_object_term_cache($post->ID, 'category');
- if ( false === $categories )
- $categories = wp_get_object_terms($post->ID, 'category');
- if ( array_key_exists($category, $categories) )
- return true;
- else
- return false;
- }
-
- function the_category($separator = '', $parents='', $post_id = false) {
- echo get_the_category_list($separator, $parents, $post_id);
- }
-
- function category_description($category = 0) {
- global $cat;
- if ( !$category )
- $category = $cat;
-
- return get_term_field('description', $category, 'category');
- }
-
- function wp_dropdown_categories($args = '') {
- $defaults = array(
- 'show_option_all' => '', 'show_option_none' => '',
- 'orderby' => 'ID', 'order' => 'ASC',
- 'show_last_update' => 0, 'show_count' => 0,
- 'hide_empty' => 1, 'child_of' => 0,
- 'exclude' => '', 'echo' => 1,
- 'selected' => 0, 'hierarchical' => 0,
- 'name' => 'cat', 'class' => 'postform',
- 'depth' => 0, 'tab_index' => 0
- );
-
- $defaults['selected'] = ( is_category() ) ? get_query_var('cat') : 0;
-
- $r = wp_parse_args( $args, $defaults );
- $r['include_last_update_time'] = $r['show_last_update'];
- extract( $r );
-
- $tab_index_attribute = '';
- if ( (int) $tab_index > 0 )
- $tab_index_attribute = " tabindex=\"$tab_index\"";
-
- $categories = get_categories($r);
-
- $output = '';
- if ( ! empty($categories) ) {
- $output = "<select name='$name' id='$name' class='$class' $tab_index_attribute>\n";
-
- if ( $show_option_all ) {
- $show_option_all = apply_filters('list_cats', $show_option_all);
- $output .= "\t<option value='0'>$show_option_all</option>\n";
- }
-
- if ( $show_option_none) {
- $show_option_none = apply_filters('list_cats', $show_option_none);
- $output .= "\t<option value='-1'>$show_option_none</option>\n";
- }
-
- if ( $hierarchical )
- $depth = $r['depth']; // Walk the full depth.
- else
- $depth = -1; // Flat.
-
- $output .= walk_category_dropdown_tree($categories, $depth, $r);
- $output .= "</select>\n";
- }
-
- $output = apply_filters('wp_dropdown_cats', $output);
-
- if ( $echo )
- echo $output;
-
- return $output;
- }
-
- function wp_list_categories($args = '') {
- $defaults = array(
- 'show_option_all' => '', 'orderby' => 'name',
- 'order' => 'ASC', 'show_last_update' => 0,
- 'style' => 'list', 'show_count' => 0,
- 'hide_empty' => 1, 'use_desc_for_title' => 1,
- 'child_of' => 0, 'feed' => '', 'feed_type' => '',
- 'feed_image' => '', 'exclude' => '', 'current_category' => 0,
- 'hierarchical' => true, 'title_li' => __('Categories'),
- 'echo' => 1, 'depth' => 0
- );
-
- $r = wp_parse_args( $args, $defaults );
-
- if ( !isset( $r['pad_counts'] ) && $r['show_count'] && $r['hierarchical'] ) {
- $r['pad_counts'] = true;
- }
-
- if ( isset( $r['show_date'] ) ) {
- $r['include_last_update_time'] = $r['show_date'];
- }
-
- extract( $r );
-
- $categories = get_categories($r);
-
- $output = '';
- if ( $title_li && 'list' == $style )
- $output = '<li class="categories">' . $r['title_li'] . '<ul>';
-
- if ( empty($categories) ) {
- if ( 'list' == $style )
- $output .= '<li>' . __("No categories") . '</li>';
- else
- $output .= __("No categories");
- } else {
- global $wp_query;
-
- if( !empty($show_option_all) )
- if ('list' == $style )
- $output .= '<li><a href="' . get_bloginfo('url') . '">' . $show_option_all . '</a></li>';
- else
- $output .= '<a href="' . get_bloginfo('url') . '">' . $show_option_all . '</a>';
-
- if ( empty( $r['current_category'] ) && is_category() )
- $r['current_category'] = $wp_query->get_queried_object_id();
-
- if ( $hierarchical )
- $depth = $r['depth'];
- else
- $depth = -1; // Flat.
-
- $output .= walk_category_tree($categories, $depth, $r);
- }
-
- if ( $title_li && 'list' == $style )
- $output .= '</ul></li>';
-
- $output = apply_filters('wp_list_categories', $output);
-
- if ( $echo )
- echo $output;
- else
- return $output;
- }
-
- function wp_tag_cloud( $args = '' ) {
- $defaults = array(
- 'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
- 'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC',
- 'exclude' => '', 'include' => ''
- );
- $args = wp_parse_args( $args, $defaults );
-
- $tags = get_tags( array_merge($args, array('orderby' => 'count', 'order' => 'DESC')) ); // Always query top tags
-
- if ( empty($tags) )
- return;
-
- $return = wp_generate_tag_cloud( $tags, $args ); // Here's where those top tags get sorted according to $args
-
- if ( is_wp_error( $return ) )
- return false;
-
- $return = apply_filters( 'wp_tag_cloud', $return, $args );
-
- if ( 'array' == $args['format'] )
- return $return;
-
- echo $return;
- }
-
- // $tags = prefetched tag array ( get_tags() )
- // $args['format'] = 'flat' => whitespace separated, 'list' => UL, 'array' => array()
- // $args['orderby'] = 'name', 'count'
- function wp_generate_tag_cloud( $tags, $args = '' ) {
- global $wp_rewrite;
- $defaults = array(
- 'smallest' => 8, 'largest' => 22, 'unit' => 'pt', 'number' => 45,
- 'format' => 'flat', 'orderby' => 'name', 'order' => 'ASC'
- );
- $args = wp_parse_args( $args, $defaults );
- extract($args);
-
- if ( !$tags )
- return;
- $counts = $tag_links = array();
- foreach ( (array) $tags as $tag ) {
- $counts[$tag->name] = $tag->count;
- $tag_links[$tag->name] = get_tag_link( $tag->term_id );
- if ( is_wp_error( $tag_links[$tag->name] ) )
- return $tag_links[$tag->name];
- $tag_ids[$tag->name] = $tag->term_id;
- }
-
- $min_count = min($counts);
- $spread = max($counts) - $min_count;
- if ( $spread <= 0 )
- $spread = 1;
- $font_spread = $largest - $smallest;
- if ( $font_spread <= 0 )
- $font_spread = 1;
- $font_step = $font_spread / $spread;
-
- // SQL cannot save you; this is a second (potentially different) sort on a subset of data.
- if ( 'name' == $orderby )
- uksort($counts, 'strnatcasecmp');
- else
- asort($counts);
-
- if ( 'DESC' == $order )
- $counts = array_reverse( $counts, true );
- elseif ( 'RAND' == $order ) {
- $keys = array_rand( $counts, count($counts) );
- foreach ( $keys as $key )
- $temp[$key] = $counts[$key];
- $counts = $temp;
- unset($temp);
- }
-
- $a = array();
-
- $rel = ( is_object($wp_rewrite) && $wp_rewrite->using_permalinks() ) ? ' rel="tag"' : '';
-
- foreach ( $counts as $tag => $count ) {
- $tag_id = $tag_ids[$tag];
- $tag_link = clean_url($tag_links[$tag]);
- $a[] = "<a href='$tag_link' class='tag-link-$tag_id' title='" . attribute_escape( sprintf( __ngettext('%d topic','%d topics',$count), $count ) ) . "'$rel style='font-size: " .
- ( $smallest + ( ( $count - $min_count ) * $font_step ) )
- . "$unit;'>$tag</a>";
- }
-
- switch ( $format ) :
- case 'array' :
- $return =& $a;
- break;
- case 'list' :
- $return = "<ul class='wp-tag-cloud'>\n\t<li>";
- $return .= join("</li>\n\t<li>", $a);
- $return .= "</li>\n</ul>\n";
- break;
- default :
- $return = join("\n", $a);
- break;
- endswitch;
-
- return apply_filters( 'wp_generate_tag_cloud', $return, $tags, $args );
- }
-
- //
- // Helper functions
- //
-
- function walk_category_tree() {
- $walker = new Walker_Category;
- $args = func_get_args();
- return call_user_func_array(array(&$walker, 'walk'), $args);
- }
-
- function walk_category_dropdown_tree() {
- $walker = new Walker_CategoryDropdown;
- $args = func_get_args();
- return call_user_func_array(array(&$walker, 'walk'), $args);
- }
-
- //
- // Tags
- //
-
- function get_tag_link( $tag_id ) {
- global $wp_rewrite;
- $taglink = $wp_rewrite->get_tag_permastruct();
-
- $tag = &get_term($tag_id, 'post_tag');
- if ( is_wp_error( $tag ) )
- return $tag;
- $slug = $tag->slug;
-
- if ( empty($taglink) ) {
- $file = get_option('home') . '/';
- $taglink = $file . '?tag=' . $slug;
- } else {
- $taglink = str_replace('%tag%', $slug, $taglink);
- $taglink = get_option('home') . user_trailingslashit($taglink, 'category');
- }
- return apply_filters('tag_link', $taglink, $tag_id);
- }
-
- function get_the_tags( $id = 0 ) {
- return apply_filters( 'get_the_tags', get_the_terms($id, 'post_tag') );
- }
-
- function get_the_tag_list( $before = '', $sep = '', $after = '' ) {
- return apply_filters( 'the_tags', get_the_term_list(0, 'post_tag', $before, $sep, $after) );
- }
-
- function the_tags( $before = 'Tags: ', $sep = ', ', $after = '' ) {
- return the_terms( 0, 'post_tag', $before, $sep, $after );
- }
-
- function get_the_terms( $id = 0, $taxonomy ) {
- global $post;
-
- $id = (int) $id;
-
- if ( ! $id && ! in_the_loop() )
- return false; // in-the-loop function
-
- if ( !$id )
- $id = (int) $post->ID;
-
- $terms = get_object_term_cache($id, $taxonomy);
- if ( false === $terms )
- $terms = wp_get_object_terms($id, $taxonomy);
-
- if ( empty( $terms ) )
- return false;
-
- return $terms;
- }
-
- function get_the_term_list( $id = 0, $taxonomy, $before = '', $sep = '', $after = '' ) {
- $terms = get_the_terms($id, $taxonomy);
-
- if ( is_wp_error($terms) )
- return $terms;
-
- if ( empty( $terms ) )
- return false;
-
- foreach ( $terms as $term ) {
- $link = get_term_link($term, $taxonomy);
- if ( is_wp_error( $link ) )
- return $link;
- $term_links[] = '<a href="' . $link . '" rel="tag">' . $term->name . '</a>';
- }
-
- $term_links = apply_filters( "term_links-$taxonomy", $term_links );
-
- return $before . join($sep, $term_links) . $after;
- }
-
- function the_terms( $id, $taxonomy, $before = '', $sep = '', $after = '' ) {
- $return = get_the_term_list($id, $taxonomy, $before, $sep, $after);
- if ( is_wp_error( $return ) )
- return false;
- else
- echo $return;
- }
-
- /**
- * Check if the current post has the given tag
- *
- * @package WordPress
- * @since 2.6
- *
- * @uses wp_get_object_terms() Gets the tags.
- *
- * @param string|int|array $tag Optional. The tag name/id/slug or array of them to check for
- * @return bool True if the current post has the given tag, or any tag, if no tag specified
- */
- function has_tag($tag = '') {
- global $post;
- $taxonomy = 'post_tag';
-
- if ( !in_the_loop() ) return false; // in-the-loop function
-
- $post_id = (int) $post->ID;
-
- $terms = get_object_term_cache($post_id, $taxonomy);
- if (empty($terms))
- $terms = wp_get_object_terms($post_id, $taxonomy);
- if (empty($terms)) return false;
-
- if (empty($tag)) return (!empty($terms));
-
- $tag = (array) $tag;
-
- foreach($terms as $term) {
- if ( in_array( $term->term_id, $tag ) ) return true;
- if ( in_array( $term->name, $tag ) ) return true;
- if ( in_array( $term->slug, $tag ) ) return true;
- }
-
- return false;
- }
-
- ?>
-