Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result resource in
解決方案：
$sql = "SELECT * FROM news where ruse='$nowname' and DATE_SUB(CURDATE(), INTERVAL 30 DAY) <= date order by rid";
$query = mysql_query($sql);
if($query){
$row = mysql_fetch_array($query);
}
先判斷后取值，解決