Server sent events work, but with a massive time delay

Question

Ill start off by saying this works perfectly on my local machine, the js example below connects to stream.php and receives a continuous update of the servers current time every

Answer 1

@Derrick, your suggested ob_end_flush(); line got me close, but in more complex PHP than hello world code, I was still getting unwanted reopens on my SSE connections (I still don't fully understand why ob_end_flush() was doing that to me). So here's the pattern I'm now using (otherwise identical to your stream.php). In English, I'm turning off PHP output buffering before entering my infinite loop:

// per http://www.php.net/manual/en/book.outcontrol.php:
//     Clean (erase) the output buffer and turn off output buffering
ob_end_clean();

// how long PHP script stays running/SSE connection stays open (seconds)
set_time_limit(60);
while (true) {

  // use @Derrick's header/send code here

  ob_flush();  // note I don't turn off output buffering here again
  flush();
  sleep(1);
}