สมัครสมาชิก

<?php 
$servername = "localhost";
$username = "root";
$password = "12345678";
$dbname = "test1";
$user = $_GET['Us'];
$pass = $_GET['Ps'];
$email = $_GET['Em'];
$conn = new mysqli($servername, $username, $password,$dbname);
$sql = "SELECT * FROM register WHERE Username = '".$user."' OR Email = ".$email.";";
$exec = $conn->query($sql);
$fetch = $exec->fetch_assoc();
if($fetch != TRUE){
    $sql = "INSERT INTO register(Username, Password,Email)
            VALUES ('".$user."', '".$pass."', '".$email."')";
if ($conn->query($sql) === TRUE) {
	echo"สมัครเรียบร้อย";
}
	}else{
		echo"มีชื่อนี้แล้ว";}

?>