Horde_Mime_Part::offsetGet PHP Method

    public function offsetGet($offset)
    {
        $this->_reindex();
        if (strcmp($offset, $this->getMimeId()) === 0) {
            $this->parent = null;
            return $this;
        }
        foreach ($this->_parts as $val) {
            if (strcmp($offset, $val->getMimeId()) === 0) {
                $val->parent = $this;
                return $val;
            }
            if ($found = $val[$offset]) {
                return $found;
            }
        }
        return null;
    }