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   1  <?php
   2  
   3  function get_all_category_ids() {
   4      global $wpdb;
   5  
   6      if ( ! $cat_ids = wp_cache_get('all_category_ids', 'category') ) {
   7          $cat_ids = get_terms('category', 'fields=ids&get=all');
   8          wp_cache_add('all_category_ids', $cat_ids, 'category');
   9      }
  10  
  11      return $cat_ids;
  12  }
  13  
  14  function &get_categories($args = '') {
  15      $defaults = array('type' => 'category');
  16      $args = wp_parse_args($args, $defaults);
  17  
  18      $taxonomy = 'category';
  19      if ( 'link' == $args['type'] )
  20          $taxonomy = 'link_category';
  21      $categories = get_terms($taxonomy, $args);
  22  
  23      foreach ( array_keys($categories) as $k )
  24          _make_cat_compat($categories[$k]);
  25  
  26      return $categories;
  27  }
  28  
  29  // Retrieves category data given a category ID or category object.
  30  // Handles category caching.
  31  function &get_category($category, $output = OBJECT, $filter = 'raw') {
  32      $category = get_term($category, 'category', $output, $filter);
  33      if ( is_wp_error( $category ) )
  34          return $category;
  35  
  36      _make_cat_compat($category);
  37  
  38      return $category;
  39  }
  40  
  41  function get_category_by_path($category_path, $full_match = true, $output = OBJECT) {
  42      global $wpdb;
  43      $category_path = rawurlencode(urldecode($category_path));
  44      $category_path = str_replace('%2F', '/', $category_path);
  45      $category_path = str_replace('%20', ' ', $category_path);
  46      $category_paths = '/' . trim($category_path, '/');
  47      $leaf_path  = sanitize_title(basename($category_paths));
  48      $category_paths = explode('/', $category_paths);
  49      $full_path = '';
  50      foreach ( (array) $category_paths as $pathdir )
  51          $full_path .= ( $pathdir != '' ? '/' : '' ) . sanitize_title($pathdir);
  52  
  53      $categories = get_terms('category', "get=all&slug=$leaf_path");
  54  
  55      if ( empty($categories) )
  56          return NULL;
  57  
  58      foreach ($categories as $category) {
  59          $path = '/' . $leaf_path;
  60          $curcategory = $category;
  61          while ( ($curcategory->parent != 0) && ($curcategory->parent != $curcategory->term_id) ) {
  62              $curcategory = get_term($curcategory->parent, 'category');
  63              if ( is_wp_error( $curcategory ) )
  64                  return $curcategory;
  65              $path = '/' . $curcategory->slug . $path;
  66          }
  67  
  68          if ( $path == $full_path )
  69              return get_category($category->term_id, $output);
  70      }
  71  
  72      // If full matching is not required, return the first cat that matches the leaf.
  73      if ( ! $full_match )
  74          return get_category($categories[0]->term_id, $output);
  75  
  76      return NULL;
  77  }
  78  
  79  function get_category_by_slug( $slug  ) {
  80      $category = get_term_by('slug', $slug, 'category');
  81      if ( $category )
  82          _make_cat_compat($category);
  83  
  84      return $category;
  85  }
  86  
  87  // Get the ID of a category from its name
  88  function get_cat_ID($cat_name='General') {
  89      global $wpdb;
  90  
  91      $cat = get_term_by('name', $cat_name, 'category');
  92      if ($cat)
  93          return $cat->term_id;
  94      return 0;
  95  }
  96  
  97  // Deprecate
  98  function get_catname($cat_ID) {
  99      return get_cat_name($cat_ID);
 100  }
 101  
 102  // Get the name of a category from its ID
 103  function get_cat_name($cat_id) {
 104      $cat_id = (int) $cat_id;
 105      $category = &get_category($cat_id);
 106      return $category->name;
 107  }
 108  
 109  function cat_is_ancestor_of($cat1, $cat2) {
 110      if ( is_int($cat1) )
 111          $cat1 = & get_category($cat1);
 112      if ( is_int($cat2) )
 113          $cat2 = & get_category($cat2);
 114  
 115      if ( !$cat1->term_id || !$cat2->parent )
 116          return false;
 117  
 118      if ( $cat2->parent == $cat1->term_id )
 119          return true;
 120  
 121      return cat_is_ancestor_of($cat1, get_category($cat2->parent));
 122  }
 123  
 124  function sanitize_category($category, $context = 'display') {
 125      return sanitize_term($category, 'category', $context);
 126  }
 127  
 128  function sanitize_category_field($field, $value, $cat_id, $context) {
 129      return sanitize_term_field($field, $value, $cat_id, 'category', $context);
 130  }
 131  
 132  // Tags
 133  
 134  function &get_tags($args = '') {
 135      global $wpdb, $category_links;
 136  
 137      $key = md5( serialize( $args ) );
 138      if ( $cache = wp_cache_get( 'get_tags', 'category' ) )
 139          if ( isset( $cache[ $key ] ) )
 140              return apply_filters('get_tags', $cache[$key], $args);
 141  
 142  
 143      $tags = get_terms('post_tag', $args);
 144  
 145      if ( empty($tags) )
 146          return array();
 147  
 148      $cache[ $key ] = $tags;
 149      wp_cache_set( 'get_tags', $cache, 'category' );
 150  
 151      $tags = apply_filters('get_tags', $tags, $args);
 152      return $tags;
 153  }
 154  
 155  function &get_tag($tag, $output = OBJECT, $filter = 'raw') {
 156      return get_term($tag, 'post_tag', $output, $filter);
 157  }
 158  
 159  //
 160  // Cache
 161  //
 162  
 163  function update_category_cache() {
 164      return true;
 165  }
 166  
 167  function clean_category_cache($id) {
 168      clean_term_cache($id, 'category');
 169  }
 170  
 171  //
 172  // Private helpers
 173  //
 174  
 175  function _make_cat_compat( &$category) {
 176      if ( is_object($category) ) {
 177          $category->cat_ID = &$category->term_id;
 178          $category->category_count = &$category->count;
 179          $category->category_description = &$category->description;
 180          $category->cat_name = &$category->name;
 181          $category->category_nicename = &$category->slug;
 182          $category->category_parent = &$category->parent;
 183      } else if ( is_array($category) && isset($category['term_id']) ) {
 184          $category['cat_ID'] = &$category['term_id'];
 185          $category['category_count'] = &$category['count'];
 186          $category['category_description'] = &$category['description'];
 187          $category['cat_name'] = &$category['name'];
 188          $category['category_nicename'] = &$category['slug'];
 189          $category['category_parent'] = &$category['parent'];
 190      }
 191  }
 192  
 193  ?>