PHP + MySQL 한글 깨짐현상

function doQuery($question, $answer, $description)
{
	$member_srl = "0";
	$category_id = "0";
 
	$sql = "INSERT INTO heopa_quiz" . 
			" (quiz_id, member_srl, category_id, question, answer, description)" . 
			" VALUES (NULL, ".$member_srl.", ".$category_id.", \"".$question."\", \"".$answer."\", \"".$description."\");"; 
 
	echo $sql;
 
	$con = mysql_connect("localhost", "id", "pass");
	if ( !$con )
		die('Could not connect: ' . mysql_error());
	mysql_select_db("heopa", $con);
	mysql_query($sql, $con);
	mysql_close($con);
}

CREATE TABLE IF NOT EXISTS `heopa_quiz` (
  `quiz_id` bigint(20) NOT NULL auto_increment,
  `member_srl` bigint(20) NOT NULL,
  `category_id` bigint(20) NOT NULL default '0',
  `question` longtext NOT NULL,
  `answer` longtext NOT NULL,
  `description` longtext,
  PRIMARY KEY  (`quiz_id`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8;