<?php include "db.php";?>
<?php

if (isset($_POST['submit'])) {
    $username=$_POST['username'];
    $password=$_POST['password'];


$query="INSERT INTO tt(username,password)VALUES('$username','$password')";
$result=mysqli_query($connection,$query);
    if (!$result) {
        echo "query failed".mysqli_error();
    }

}
?>