The function invalidSql() returns a list of invalid SQL statements collected by the performance monitor logSql feature.

/*
* Connection to DB2 database
*/
 
$perf = newPerfMonitor($db);
 
/*
 * Enable logging
*/
$db->logSql();
 
/*
 * Execute invalid SQL statement
*/
$SQL = "SELECT * FROM act where actno > 'A'";
 
$db->execute($SQL);
 
 
$h = $perf->invalidSql();