foreach看起來不像在php

Question

中正常工作我使用以下代碼來獲得總價格，但它輸出的值高於預期值。這是什麼原因？

$query = " SELECT * 
      FROM `mytable` 
      WHERE `sale_id` = $id"; 

$result = mysql_query($query); 
$item = mysql_fetch_array($result); 


foreach ($item as $row) {    
    $total_price += $row['price']; 
} 

echo $total_price; 

Answer 1

試試這個，

$result = mysql_query($query); 

while ($row = mysql_fetch_array($result)) {    
    $total_price += $row['price']; 
} 

echo $total_price;