/**
  * Returns the path name for the var directory
  *
  * The var directory may be placed outside the webroot. In this case
  * the var directory path should be placed in a file ./var/.key.php like:
  *
  * $protectedVarPath='/path/to/where/you/need/the/var/dir';
  *
  * obviously the .key.php file must be a valid php file.
  *
  * @return string the var directory path name
  * @todo the .key.php construct seems odd
  **/
 public static function varpath()
 {
     if (isset(self::$var)) {
         return self::$var;
     }
     self::$var = './var';
     return self::$var;
 }