在PHP上的foreach的每次迭代中将元素存储在数组中 [英] Storing elements in an array at each iteration of a foreach on PHP

问题描述

我有一个foreach来检查我的php站点中的会话数，并检查它从数据库中获取项目名称的每个会话。

I have a foreach that checks the number of sessions in my php site and for each session it fetches from a db the name of an item.

我想要将名称顺序存储在变量中，以便以后可以使用它们，因此不必再次调用数据库。

I would like to store the names sequentially in variables so I could use them after, so I don't have to make a second call to the database.

这里是foreach：

Here is the foreach:

foreach ($_SESSION['cart'] as $item) 
{ 
    $pid = $item['itemId'];
    $q = $item['qty'];
    $query2 = $con -> prepare("SELECT * FROM item_descr WHERE id_item = :idItem");
    $query2-> bindValue (':idItem',$pid);
    $query2->execute();
    $row2 = $query2->fetch(PDO::FETCH_ASSOC);
}

假设有3个会话，我如何继续保存$ row2 ['名称]以后可以使用的其他变量中？

Let's say there are 3 sessions, how could I keep saving $row2['name'] in different variables that I could use later?

谢谢！

推荐答案

在 foreach 之前定义一个数组，用于将结果存储在以下位置：

Before the foreach define an array to store results in:

$mySessions = array();

然后在 $ row2 = ...之后。 c>行：

Then after the $row2 = .... line:

$mySessions[] = $row2;

然后，您将填充数组，以便在循环完成后可以使用它。

Then you will have the array populated so you can use it after your loop is completed.

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