Learning about PHP 8.1 fibers
A Request for Comments (RFC) was published in March 2021 by Aaron Piotrowski and Niklas Keller, both PHP core team developers, outlining the case for including support for fibers in the PHP language core. The RFC was ratified at the end of the month and has now been implemented in the upcoming 8.1 version of PHP.
The fiber implementation is low-level, meaning that it is mainly designed to be used as part of a PHP async framework such as ReactPHP or Amp, or an extension such as the Swoole extension. Because this will, as of PHP 8.1 and beyond, be a core part of the language, developers will not have to worry so much about which extensions are loaded. Also, this greatly enhances PHP async frameworks as they now have low-level support, directly in the language core, greatly improving performance. Let's now have a look at the Fiber class itself.
Discovering the Fiber class
The PHP 8.1 Fiber class offers a bare-bones implementation upon which...
