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<?php $pdo->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY , false); $pdo->setAttribute(PDO::ATTR_ERRMODE , PDO::ERRMODE_SILENT); $sql1 = 'SELECT 1'; $sql2 = 'SELECT IF(1, (SELECT 1 UNION ALL SELECT 2), 0)'; $sql3 = 'SELECT 3'; $s = $pdo->query( $sql1.';'.$sql2.';'.$sql3 ); echo "first: \n"; print_r($s->errorInfo()); echo "second: \n"; var_dump($s->nextRowset()); print_r($s->errorInfo()); echo "third: \n"; var_dump($s->nextRowset()); print_r($s->errorInfo()); echo "fourth: \n"; var_dump($s->nextRowset()); print_r($s->errorInfo());