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.

locking

The type of locking to be set. It can be one of the following constants: FBSQL_LOCK_DEFERRED, FBSQL_LOCK_OPTIMISTIC, or FBSQL_LOCK_PESSIMISTIC.

isolation

The type of isolation to be set. It can be one of the following constants: FBSQL_ISO_READ_UNCOMMITTED, FBSQL_ISO_READ_COMMITTED, FBSQL_ISO_REPEATABLE_READ, FBSQL_ISO_SERIALIZABLE, or FBSQL_ISO_VERSIONED.