Getting drop down menu

I'm using Paypal's buy it now buttons along with an IPN handler written in PHP to send me an e-mail whenever a purchase is made. The e-mail is properly being sent a开发者_运维知识库nd is passing much of the data, but it's not capturing the drop down list for selecting a clothing item's size.

Here's my button code fields:

<input type="hidden" name="item_name" value="Test Shirt">
<input type="hidden" name="item_number" value="001">
<input type="hidden" name="on0" value="sizes">

Select a size:
<select name="os0">
 <option value="Small">Small </option>
 <option value="Medium">Medium </option>
 <option value="Large">Large </option>
 <option value="Extra Large">Extra Large </option>
</select>

My PHP IPN script that captures the data into variables looks like this:

$item_name = $_POST['item_name'];
$item_number = $_POST['item_number'];
$size = $_POST['on0'];
$sizeChoice = $_POST['os0'];

The e-mail properly displays the item name and item number, but nothing for the $size and $sizeChoice variables. It's late so I'm sure I'm looking over something very obvious but am still wondering if I'm just calling it wrong or if I'm forgetting some hidden fields?

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Had the same probelm today. Instead of using $_POST['os0'] and $_POST['on0'], use $_POST['option_selection1'] and $_POST['option_name1']

This page shows the options, search for "option_name1": Getting drop down menu

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Variable names are case sensitive. Use $_POST instead of $_post.