code: public function get(string $sName, int &$iFlags = null, int $iTimeout = 0)
      {
          if ($iTimeout > 0 && file_exists($this->_sFolder.$this->_getSubDirectory($sName).md5($sName).'.fil.cac')
              && time() - filemtime($this->_sFolder.$this->_getSubDirectory($sName).md5($sName).'.fil.cac') > $iTimeout) {
  
              unlink($this->_sFolder.$this->_getSubDirectory($sName).md5($sName).'.fil.cac');
          }
  
          if (file_exists($this->_sFolder.$this->_getSubDirectory($sName).md5($sName).'.fil.cac')) {
  
              return unserialize(file_get_contents($this->_sFolder . $this->_getSubDirectory($sName) . md5($sName) . '.fil.cac'));
          } else {
  
              return false;
          }
      }
docs: get a value
  
  @access public
  @param  string $sName name of the session
  @param  int $iFlags flags
  @param  int $iTimeout expiration of cache
  @return mixed