How to enable websockets in XAMPP?

Question

PHP

I already asked this question over a year ago, but then no one answered. It is still relevant, so I will repeat.
I'm new to web sockets and I don't understand anything. I need in a project to make web sockets operating inside the local network on a XAMPP server (Windows 10). Check script

if(extension_loaded('sockets')) echo "WebSockets OK";
else echo "WebSockets UNAVAILABLE";

gives "WebSockets UNAVAILABLE"
Here's what I tried:

• unlocked the line in php.ini:
  extension=sockets
  
• added to php.ini line:
  extentions=php_sockets.dll
  
• wrote in the project folder console:
  php php-socket.php
  Could not open input file: php-socket.php