svn_fs_revision_root
  Get a handle on a specific version of the repository root
  
 
  Description
  
   resource svn_fs_revision_root(resource $fs, int $revnum)
  WarningThis function is
currently not documented; only its argument list is available.
 
  
   Get a handle on a specific version of the repository root
  
  
 
  Notes
  WarningThis function is
EXPERIMENTAL. The behaviour of this function, its name, and
surrounding documentation may change without notice in a future release of PHP.
This function should be used at your own risk.