protected function _getCid($mailbox, $slice)
    {
        return implode('|', array(
            'horde_imap_client',
            $this->_params['username'],
            $mailbox,
            $this->_params['hostspec'],
            $this->_params['port'],
            $slice,
            self::VERSION
        ));
    }
protected function _getCid($mailbox, $slice)
    {
        return implode('|', array(
            'horde_imap_client',
            $this->_params['username'],
            $mailbox,
            $this->_params['hostspec'],
            $this->_params['port'],
            $slice,
            self::VERSION
        ));
    }
protected function _getCid ( $ mailbox , $ slice ) { return implode ( '|' , array ( 'horde_imap_client' , $ this -> _params [ 'username' ] , $ mailbox , $ this -> _params [ 'hostspec' ] , $ this -> _params [ 'port' ] , $ slice , self :: VERSION ) ) ; }
Create the unique ID used to store the data in the cache.

@param string $mailbox  The mailbox to cache.
@param string $slice    The cache slice.

@return string  The cache ID.
Create the unique ID used to store the data in the cache .