ถามเรื่อง ajax login หน่อยครับ ติดอยู่นิดเดียว ตาม code ข้างบน เช็คอะไไรได้แล้วครับ เหลือ redirect อย่างเดียว ไม่รู้ว่าผิดตรงไหน

session_start();
 
    $strUsername = $_POST["tUsername"];
    $strPassword = $_POST["tPassword"];
    $strloginto = $_POST["lLoginto"];
     
    //*** Check Username ***//
    if(trim($strUsername) == "")
    {
        echo "<font color=red>** Please input <b>Username</b>. </font>";
        exit();
    }
     
    //*** Check Password ***//
    if(trim($strPassword) == "")
    {
        echo "<font color=red>** Please input <b>Password</b>.</font>";
        exit();
    }
	
	if($strloginto == "0")
	{
	
	    echo "<font color=red>** Please Select <b>Login To</b>.</font>";
        exit();
	
	}
     
    //เลือก db
	
	if($strloginto == "1")
	{
	
	   	
       $host = "localhost";
       $user = "root";
       $pass = "12345";
       $dbname = "abc_calendar";
	   
       $redirect = "O";
	

    }else if($strloginto == "2"){
	
	   	
       $host = "localhost";
       $user = "root";
       $pass = "12345";
       $dbname = "abc_cpncalendar";
	   
       $redirect = "C";
	  
  
      
	
	}


    $conn = mysql_connect($host,$user,$pass);

    if(!$conn)
    {
 
      echo "Can not connect database";
      exit();
 
     }
 
    mysql_select_db($dbname);
 
 
    //*** Check Username & Password ***//
	
	 
     $sql = "SELECT * FROM users WHERE user_login='$strUsername' AND user_password='$strPassword' AND user_is_approved='1' ";	
	
    $result = mysql_query($sql);
    $rs = mysql_fetch_array($result);
    if($rs)
    {
        echo "Y";

       //ผมจะส่งค่า ใน O หรือ C ไปให้หน้า form ยังไง ครับ

       echo $redirect;

      						 
        $_SESSION["ss_username"] = $strUsername;
	$_SESSION['ss_user_id'] = $rs[user_id];		
	$_SESSION['ss_email'] = $rs[user_email];
        session_write_close();
		
    }
    else
    {
        echo "<font color=red>** <b>Username</b> or <b>Password</b> Invalid.</font>";
    }