ช่วยดูโค๊ดนี้ให้หน่อยคะ ทำไมดึงข้อมูลในDB มาโชว์ไม่ได้

$arr_data= explode("|",$text);
foreach($arr_data as $val => $v)
{
if(strlen(trim($v))>0) 
{
$sql =" INSERT INTO onegram (,word_id,word,frequency) VALUES ('$v','1') ON DUPLICATE KEY UPDATE frequency=frequency+1";
$result = mysql_query($sql) or die("mysql_query[" . $sql . "]");   
$num_record = mysql_num_rows( $result);
while($dbarr =   $num_record)
{
// echo " word_id: ". "$dbarr[0]"." word: "."$dbarr[1]"." frequency: "."$dbarr[2]"."<br>";
echo " word: ". "$dbarr[0]"."<br>";
}		
}
}