18     public $cache;  variable in HTMLPurifier_LanguageFactory
139         return $this->cache[$code]['fallback'];
151         if (isset($this->cache[$code])) {
165             $cache = array();
168             $cache = compact($this->keys);
187             $fallback_cache = $this->cache[$fallback];
191                 if (isset($cache[$key]) && isset($fallback_cache[$key])) {
193                         $cache[$key] = $cache[$key] + $fallback_cache[$key];
195                         $cache[$key] = array_merge($fallback_cache[$key], $cache[$key]);
198                     $cache[$key] = $fallback_cache[$key];
204         $this->cache[$code] = $cache;