从表单中的POST获取Foreach值 [英] Foreach value from POST from form

问题描述

我将某些数据从表单发布到另一页.这是一个购物车，并且要根据购物车中有多少商品在页面上生成要提交的表单.例如，如果只有1个商品，那么我们只有字段名称"item_name_1"，该字段应存储"Sticker"之类的值，而"item_price_1"则存储该商品的价格.但是，如果某人有5个商品，我们将需要'item_name_2'，'item_name_3'等，以获取每个商品的价值，直至第五个商品.

I post some data over to another page from a form. It's a shopping cart, and the form that's being submitted is being generated on the page before depending on how many items are in the cart. For example, if there's only 1 items then we only have the field name 'item_name_1' which should store a value like "Sticker" and 'item_price_1' which stores the price of that item. But if someone has 5 items, we would need 'item_name_2', 'item_name_3', etc. to get the values for each item up to the fifth one.

循环浏览这些项目以获得值的最佳方法是什么?

What would be the best way to loop through those items to get the values?

这是我所拥有的，显然不起作用.

Here's what I have, which obviously isn't working.

extract($_POST);

$x = 1; // Assuming there's always one item we're on this page, we set the variable to get into the loop

while(${'item_name_' .$x} != '') {

echo ${'item_name' .$x};

$x++;

}

我对这种用法还比较陌生，所以我并不完全了解如何处理这种用法.

I'm still relatively new to this kind of usage, so I'm not entirely how the best way to deal with it.

谢谢.

推荐答案

使用类似数组的字段:

<input name="name_for_the_items[]"/>

您可以遍历以下字段:

foreach($_POST['name_for_the_items'] as $item)
{
  //do something with $item
}

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