HTML5 - Introducing WebSockets
https://www.html5rocks.com/en/tutorials/websockets/basics/
PHP Implementation
http://phppot.com/php/simple-php-chat-using-websocket/
or
https://github.com/ratchetphp/Ratchet/
or
https://www.sanwebe.com/2013/05/chat-using-websocket-php-socket/
warning
1-you have to enable the sockets extension - http://www.php.net/manual/en/sockets.installation.php to php.ini aka
2-of course run the server from command line.
https://www.html5rocks.com/en/tutorials/websockets/basics/
PHP Implementation
http://phppot.com/php/simple-php-chat-using-websocket/
or
https://github.com/ratchetphp/Ratchet/
or
https://www.sanwebe.com/2013/05/chat-using-websocket-php-socket/
warning
1-you have to enable the sockets extension - http://www.php.net/manual/en/sockets.installation.php to php.ini aka
JavaScript:
extension=php_sockets.dll2-of course run the server from command line.