How to automate processes in an online store (one-pager)?

Question

Automation

Hello everyone, I want to make automation in a one-pager. Highlights: 1. a person made an order, paid through a payment system, he receives an automatic letter to the soap that you made an order, your order number, amount, etc. pending payment verification. 2. A check has been made, a message arrives that the payment has been confirmed, the order has gone into processing. All orders were recorded in the database in some thread, so that everything could be tracked, which order was paid for, which one was sent. In general, how can these moments be done, and how is it usually done, since I have not come across this. Landos on html.
And it is desirable that especially without financial costs.

Answer 1

Make a simple script in PHP
+ there are many ready-made scripts of this type on the network with a bunch of payment options and admin panels

Answer 2

For landing on html, you can see https://money.yandex.ru/embed/quickpay/small.xml
Something more serious will cost money ))

Answer 3

Did such things, came to one universal. Naturally, I won’t give it for free)) but I can tell you.
1. You need to know php and how to work with databases, you can’t do without it
2. Take the jQuery plugin for tables here: datatables.net (in general, tables can be made extremely convenient with search, pagination, sorting by columns, etc. ) the plugin is quite steamy, but in the end you can just make a swell, from which you will rejoice and get high every time you work.
3. Unload all orders into this plate, etc., etc.
I don't really see the point in explaining the principle of implementation. I can say that you need to study 100% from php:
1. Working with POST requests (in order to receive data from the form to the handler, everything is very easy here)
2. Working with the database (adding to the database, withdrawing data from the database, at least this, it would be nice to remove it from the database in order to remove any leftists that arrive)
3. Sending applications to e-mail (everything is as simple as 1 paragraph)
4. Working with loops and arrays (also not very difficult).
Actually, everything. You don't need to know anything more.