php อ่านไทยไม่ออกทำไงครับ ช่วยบอกวิธีทำให้ php แสดงข้อความที่เป้นภาษาไทยหน่อยครับ ขอบคุณครับ

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<?
$host="localhost";
$user="root";
$pass="1234";
$dbname="xxx";

$conn=mysql_connect($host,$user,$pass) or die("connect fails");
$db=mysql_select_db($dbname) or die("db failed");
$dbs=mysql_db_query($dbname,"SET NAMES utf8"); 

?>

<?
$connection = mysql_connect("localhost", "user", "password") or die (mysql_error()); 
 $dbname = "dbData"; 
 $db = mysql_select_db("dbData", $connection) or die (mysql_error());
mysql_db_query($dbname,"SET NAMES tis620");
mysql_query("SET character_set_database ='tis620'");
mysql_query("SET character_set_results ='tis620'");
mysql_query("SET character_set_client ='tis620'");
mysql_query("SET character_set_connection ='tis620'");
mysql_query("SET character_set_system ='tis620'");
mysql_query("collation_connection = tis620_thai_ci");
mysql_query("collation_database = tis620_thai_ci");
mysql_query("collation_server = tis620_thai_ci");
?>

<?
mysql_query('SET CHARACTER SET tis620');
?>