Horde_HashTable_Base::delete PHP Method

    public function delete($keys)
    {
        if (!is_array($keys)) {
            $keys = array($keys);
        }
        if ($todo = array_diff($keys, array_keys($this->_noexist))) {
            $to_delete = array_fill_keys(array_map(array($this, 'hkey'), $todo), $todo);
            if (!$this->_delete(array_keys($to_delete))) {
                return false;
            }
            if (!empty($this->_params['logger'])) {
                $this->_params['logger']->debug(sprintf('%s: Deleted keys (%s)', get_class($this), implode(',', array_keys($to_delete))));
            }
            $this->_noexist = array_merge($this->_noexist, array_fill_keys(array_values($todo), true));
        }
        return true;
    }