1. PHP: What, Why, and Where? - PHP & MySQL: The Missing Manual, 2nd Edition [Book]
Server Sent Events with CodeIgniter - Push Notifications - Roy Tutorials
Server-Sent Events in HTML5 - Gianluca Tramontana
GitHub - shahzadthathal/server-sent-events-php-example: The EventSource interface is used to receive server-sent events. It connects to a server over HTTP and receives events in text/event-stream format without closing the connection.
Chapter 4. Messaging: communicating to and from scripts in HTML5 - HTML5 in Action
Difference between server sent events and Websockets in HTML5 - GeeksforGeeks
Server-Sent Events(SSE) - BigBoxCode
How to get Server Sent Events working nicely in PHP - Blog
HTML5 Server-Sent Events and Java Servlet example
Server-Sent Events with Spring MVC SseEmitter - Geeky Hacker
Server-Sent events with PHP and Symfony | by AlessandroMinoccheri | Medium