How to send sms via sms4b using api?

Question

PHP

It is necessary to implement the sending of a single SMS message through the api of the sms4b service. I read the api and didn’t understand anything at all, if I’m stupid, if the api description is not ok. Help me figure out how to send sms.
It is not entirely clear where to send the request and how. API
Single Dispatch Example

Answer 1

There is also a ready-made solution for php: https://www.sms4b.ru/programs/clearphp.php