ibase_rollback
  Roll back a transaction
  
 
 
  Description
  
   bool ibase_rollback
    ([ resource $link_or_trans_identifier = NULL
  ] )
  
  
 
  Parameters
  
   
    
     - 
link_or_trans_identifier
- 
      
       If called without an argument, this function rolls back the default
       transaction of the default link. If the argument is a connection
       identifier, the default transaction of the corresponding connection
       will be rolled back. If the argument is a transaction identifier, the
       corresponding transaction will be rolled back.
       
 
 
  Return Values
  
   Returns TRUE on success or FALSE on failure.