$con= mysqli_connect("localhost","root","","questionnair");

$sql="create table $username(id int(20) AUTO_INCREMENT primary key,questionnair_name varchar(200),questionnair varchar(200),answer_a varchar(200),answer_b varchar(200),answer_c varchar(200),answer_d varchar(200),a int(20),b int(20),c int(20),d int(20),two_code varchar(200),issuer varchar(100));";

mysqli_query($con,$sql);