protected function _toSequenceString($sort = true)
    {
        /* $sort is ignored - see _sort(). */

        /* Use space as delimiter as it is the only printable ASCII character
         * that is not allowed as part of the UID (RFC 1939 [7]). */
        return implode(' ', count($this->_ids) > 25000 ? array_unique($this->_ids) : array_keys(array_flip($this->_ids)));
    }
protected function _toSequenceString($sort = true)
    {
        /* $sort is ignored - see _sort(). */

        /* Use space as delimiter as it is the only printable ASCII character
         * that is not allowed as part of the UID (RFC 1939 [7]). */
        return implode(' ', count($this->_ids) > 25000 ? array_unique($this->_ids) : array_keys(array_flip($this->_ids)));
    }
protected function _toSequenceString ( $ sort = true ) { /* $sort is ignored - see _sort(). */ /* Use space as delimiter as it is the only printable ASCII character
         * that is not allowed as part of the UID (RFC 1939 [7]). */ return implode ( ' ' , count ( $ this -> _ids ) > 25000 ? array_unique ( $ this -> _ids ) : array_keys ( array_flip ( $ this -> _ids ) ) ) ; }
Create a POP3 message sequence string.

Index Format: UID1[SPACE]UID2...

@param boolean $sort  Not used in this class.

@return string  The POP3 message sequence string.
Create a POP3 message sequence string .