Untitled

<?php
require 'connection.php';
if (isset($_POST['submit'])) {
    $res= $conn->prepare("Insert into user (Name,Email,user_name,password)Values (:name,:email,:user,md5(:pass))");
    $res->bindParam(':name', $name);
    $res->bindParam(':email', $email);
    $res->bindParam(':user', $user);
    $res->bindParam(':pass', $pass);

    $name = $_POST['name'];
    $email = $_POST['email'];
    $username =$_POST['user'];
    $password = $_POST['pass'];

    $res->execute();
    if ($res==TRUE) {
        echo 'Registered successfully';
    } else {
        echo 'There was some error.';
    }

}

?>

<body>
        <form action="Registration.php" method="post" >
            Name:<br>
            <input type="text" name="name"/><br>
            Email:<br>
            <input type="text" name="email"  /><br>
            Username:<br>
            <input type="text" name="user" /><br>
            Password:<br>
            <input type="password" name="pass" /><br>

            <input type="submit" name="submit" value="SignUp!"/>
        </form>

    </body>