Mein erste PHP website

setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); $sqlQuery = "INSERT INTO schueler (SNr, Name, Vorname, Klasse) VALUES (:nr, :name, :vorname, :klasse)"; $stmt = $conn->prepare($sql); $stmt->execute([ ":nr" => 109, ":name" => "Müller", ":vorname" => "Lisa", ":klasse" => "6C" ]); // Hausaufgabe projezieren echo "Conncted successfully"; $conn = null; } catch (PDOException $e) { echo "Error: " . $e->getMessage(); } ?>