If I exit() or die() from within a method, a begun transaction is automatically COMMITTED(!) and I get wierd errors in the http error log.

<?
    class InterBaseFailure {
 
    var $dbh;
    var $trh;
 
    function InterBaseFailure() {
        $this->dbh = ibase_pconnect( "ibase/outerdb.gdb", "web", "pass" );
        $this->trh = ibase_trans( IBASE_DEFAULT, $this->dbh );
    }
 
    function Save( $num ) {
        ibase_query( $this->trh,  "insert into dummy values ($num)" );
 
        // now, if we exit() from here either directly or indirectly
        // there's a mess with the transaction handles. I get:
        // a) an error in the httpd log
        //    "x is not a valid InterBase link resource
        // b) A COMMITTED CHANGE!!!!!
        exit();
    }
    }
 
    $t = New InterBaseFailure();
    $t->Save( 3 );
 
?>