Zend_Mail::_formatAddress PHP Method

    protected function _formatAddress($email, $name)
    {
        if ($name === '' || $name === null || $name === $email) {
            return $email;
        } else {
            $encodedName = $this->_encodeHeader($name);
            if ($encodedName === $name && strcspn($name, '()<>[]:;@\\,.') != strlen($name)) {
                $format = '"%s" <%s>';
            } else {
                $format = '%s <%s>';
            }
            return sprintf($format, $encodedName, $email);
        }
    }