Untitled

<!DOCTYPE html>
<html>
<head>
  <title>Test</test>
</head>
<body>
  <?php

    $DatabaseName = "******";
    $ServerIP = "******";
    $UsernameDB = "*******";
    $PasswordDB = "*********";

    $Connection = new mysqi($ServerIP, $UsernameDB, $PasswordDB, $DatabaseName);

    if($Connection->connect_error)
    {
      die("Connection failed: ". $Connection->connect_erro);
    }

    echo"Connected successfully";

    if(isset($_POST["submit"]))
    {
      if(isset($_POST["Username"]) && isset($_POST["Password"]))
      {
        $UN = $_POST['Username'];
        $PW = $_POST['Password'];

        $Query = "SELECT * FROM Login WHERE UserName='$UN' AND PassWord='PW'";

        $result = $Connection->$Query;

        $result->num_rows;

        if(num_rows < 0)
        {
          echo"Invalid Creds";
        }
        else
        {
          echo"Welcome";
        }
      }
    }
  ?>

</body>

</html>