How to make a purchase option in excel-price?

Question

PHP

Hello. On the site, using PHPExcel, I generate a price list, about 30k positions. It is necessary to make it possible to select and order goods directly in excel. What I came up with:
A separate column in which the buyer specifies the quantity. A buy button that contains a link to the site. This link has a get parameter that contains a json string with the SKUs and the quantity of ordered items. On the server, json is decrypted and the order is placed.
Problem:
How to substitute parameters in the get link? I need something about concatenating rows, but the standard excel functions didn't help me. It seems to have found a suitable UNITE function. But, for example, in my 2016 excel`e it is not.
I thought about writing my own VBA function (and even found a ready-made function), but how to make friends with PHPExcel? Yes, and the user will pop up a message like "malicious macros", which is also not good.
Does anyone have any ideas how to organize it differently? Thank you.

Answer 1

let them send the completed price list to the mail and / or the form of uploading it to the site.