Ends the current transaction by rolling back all statements issued since
last commit.
This command is only needed if autocommit is set to false.
Parameters
-
link_identifier
-
A FrontBase link identifier
returned by fbsql_connect() or
fbsql_pconnect().
If optional and not specified,
the function will try to find an open link to the FrontBase server and if no
such link is found it will try to create one as if
fbsql_connect() was called with no arguments
Return Values
Returns TRUE
on success or FALSE
on failure.