Set the transaction locking and isolation fbsql_set_password fbsql_start_db FrontBase Functions PHP Manual fbsql_set_transaction (PHP 4 >= 4.2.0, PHP 5)fbsql_set_transaction — Set the transaction locking and isolation Description void fbsql_set_transaction ( resource $link_identifier , int $locking , int $isolation ) Sets the transaction locking and isolation . 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. Return Values No value is returned. fbsql_set_password fbsql_start_db FrontBase Functions PHP Manual