来自表单的 POST 的 Foreach 值

Foreach value from POST from form(来自表单的 POST 的 Foreach 值)

问题描述

我将一些数据从表单发布到另一个页面.这是一个购物车，提交的表单在页面上生成之前取决于购物车中有多少项目.例如，如果只有 1 个项目，那么我们只有字段名称item_name_1"，它应该存储一个值，如Sticker"和item_price_1"，它存储该项目的价格.但是如果有人有 5 个项目，我们将需要 'item_name_2'、'item_name_3' 等来获取每个项目的值，直到第五个.

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.

遍历这些项目以获取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，这显然不起作用.

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，所以我不完全是处理它的最佳方式.

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[]"/>

您可以遍历字段:

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

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