public function delete(string $sName)
    {
        return unlink($this->_sFolder.$this->_getSubDirectory($sName).md5($sName).'.fil.cac');
    }
public function delete(string $sName)
    {
        return unlink($this->_sFolder.$this->_getSubDirectory($sName).md5($sName).'.fil.cac');
    }
public function delete ( string $ sName ) { return unlink ( $ this -> _sFolder . $ this -> _getSubDirectory ( $ sName ) . md5 ( $ sName ) . '.fil.cac' ) ; }
delete a value

@access public
@param  string $sName name of the session
@return mixed
delete a value