HTTP Requests in PHP
These tutorials are dealing with the topic of HTTP requests in PHP, such as the POST request and GET request.
HTTP requests can be performed in many different ways. For example, you could either use PHP's build-in file- functions, or you could use the cURL library for PHP. The difference between the two is often negligible. Another way is to use a library such as Guzzle.
If you are instead looking for how to use cURL from a command line, you should check out this category: cURL CLI Tutorials