$letter = htmlspecialchars($_REQUEST['type']); 

$host="localhost";
 $username="root";
$password=""; 
$db="brisa"; 

// Create connection
$conn = new mysqli($host, $username, $password, $db);
// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}
//echo "connection success!Du";




$conn,