$.ajax({
 type:"POST",
 url:"/talk/ajax_pang02_question.php",
 dataType: "json",
 success:function(data){
  alert(data[0].question);
 }
 });

PHP단

header("Content-Type: text/html;charset=euc-kr");
header("Content-Encoding: utf-8");
header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past

header ("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
header ("Pragma: no-cache"); // HTTP/1.0

$json = array();
$q = "select question, answer, point from sn_pang02_question where isshow='Y' order by rand() limit 0, 10";
$r = mysql_query($q);

while( $row=mysql_fetch_array($r) ) {
 $row[question] = iconv("EUC-KR", "UTF-8", trim(stripslashes($row[question])));
    $array1 = array('question' => $row[question], 'answer' => $row[answer], 'point' => $row[point]);
    array_push($json, $array1);
}
echo urldecode(json_encode($json));

jquery, json