Question

我目前正在运行多个mysql查询但是想要运行一个并循环遍历它。我怎样才能改善这个？

 $query = mysql_query("SELECT productid, code, size, quantity, sizechart, rprice, price, weight FROM inventory WHERE code = '$productcode1'"); 
 while ($rows1 = mysql_fetch_array($query)) 
 { 
     $productids1 = $rows1['productid']; 
     $codes1 = $rows1['code']; 
     $sizes1 = ucwords($rows1['size']); 
     $quantitys1 = $rows1['quantity']; 
     $sizechart = $rows1['sizechart']; 
     $rprice = $rows1['rprice']; 
     $sprice = $rows1['price']; 
     $dweight = $rows1['weight']; 
 }

然后每个查询都进行相同但$ productcode2和$ productcode3等。

Answer 1

... WHERE代码IN（'$ productcode1'，'$ productcode2'，...）

Answer 2

更改“where code ='$ prouctcode1'”on“where code IN（...）”

Answer 3

一种解决方案是使用PDO's prepared statements。

基于PHP参考的快速，未经测试和脏的示例：

$stmt = $dbh->prepare("SELECT productid, code, size, quantity, sizechart, rprice, price, weight FROM inventory WHERE code = :code");
$stmt->bindParam(':code', $code);

foreach ($productCodes as $code) {
  $stmt->execute();
  $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
  // Do something with the results
}

一个查询而不是多个查询

3 个答案: