Pdo\Pgsql::setNoticeCallback Set a callback to handle notice and warning messages generated by the backend &reftitle.description; public voidPdo\Pgsql::setNoticeCallback callablenullcallback Set a callback to handle notice and warning messages generated by the backend. This includes messages emitted by PostgreSQL itself, as well as those raised by user-defined SQL functions using RAISE. Please note that the actual receipt of these messages depends on the backend setting client_min_messages. &reftitle.parameters; callback If &null; is passed, the handler is reset to its default state. Otherwise, the handler is a callback with the following signature: voidhandler stringmessage message A message generated by the backend. &reftitle.returnvalues; &return.void; &reftitle.examples; exec('CREATE TABLE parent(id int primary key)'); $pdo->exec('CREATE TABLE child(id int references parent)'); $pdo->setNoticeCallback(function ($message) { echo $message; }); $pdo->exec('TRUNCATE parent CASCADE'); ?> ]]> &example.outputs.similar;