dbplus_setindexbynumber
  Set index by number
  
 
 
  Description
  
   int dbplus_setindexbynumber
    ( resource $relation
   , int $idx_number
   )
  WarningThis function is
currently not documented; only its argument list is available.
 
  
 
  Parameters
  
   
    
     - 
relation
- 
      
       A relation opened by dbplus_open.
       
- 
idx_number
- 
      
       
 
 
 
  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.