Lỗi hiển thị TiếngViệt, giúp em với mấy anh ơi.gấpgấp

function mysql()
{
global $SQL_DBASE;
global $SQL_USER;
global $SQL_PASS;
global $SQL_HOST;
global $lang;

$this->DBASE = $SQL_DBASE;
$this->USER = $SQL_USER;
$this->PASS = $SQL_PASS;
$this->HOST = $SQL_HOST;
$this->LANG = $lang;

$conn = @mysql_connect($this->HOST,$this->USER,$this->PASS);
if(!$conn) {
$this->error('ConnectServerError');
}

if(!mysql_select_db($this->DBASE,$conn)) {
$this->error('ConnectDatabaseError');
}

if(!mysql_query("SET NAMES 'utf8'",$conn));

$this->CONN = $conn;
}

function error($text)
{
//$no = mysql_errno();
//$msg = mysql_error();
echo "<br><br><center><h4>[ConnectDatabaseError]</h4></center><br>";
exit;
}


////////////////Select SQL//////////////

function select ($sql="", $column="")
{
if(empty($sql)) {
return false;
}

if(!eregi("^select",$sql)) {
$this->error($lang['SqlWrong']);
return false;
}

$conn = $this->CONN;

$results = mysql_query($sql,$conn);

if( (!$results) or (empty($results)) ) {
//$this->error($this->LANG['SelectEmpty']);
return false;
}

$count = 0;
$data = array();
while ( $row = mysql_fetch_array($results)) {
$data[$count] = $row;
$count++;
}
mysql_free_result($results);
return $data;
}


/////////// Insert SQL ///////////////
function insert ($sql="") {
if(empty($sql)) {
return false;
}

if(!eregi("^insert",$sql)) {
$this->error($this->LANG['SqlWrong']);
return false;
}

$conn = $this->CONN;
$results = mysql_query($sql,$conn);

if(!$results) {
//$this->error($this->LANG['InsertFail']);
return false;
}
return true;
}