Check Client Connection

[Baez]

I have this code to check if a user has disconnected. The loop keeps running, checking for a disconnection and when a user disconnects it should continue to the final function.

 

ignore_user_abort(true);
set_time_limit(0);

$i = 1;

while($i)
{
echo chr(0);

if(connection_aborted()) // check if connection is dead
{
	$i = 0;
}

sleep(10); // check again in 5 seconds
}

endScriptFunction();

 

However this does nothing. The while loop renders all links on the page completely useless and the end script function is never called even if the user closes the page. I've tried echoing a page break instead of null with the same result.

 

Can anyone provide some insight on a better way to do this? Thanks

[Ken2k7]

Is that the entire script?

[Baez]

No it isn't. That is only the code at the end of the script. The entire script has classes grabbing code from various places and outputting it to the screen.

[Ken2k7]

Since I can't tell, I'll have to ask. Did you flush the buffer?

[Baez]

Yes sorry I forgot to add that. I'm using flush() right after the echo chr(0).

[Ken2k7]

ob_implicit_flush

[Baez]

I'm aware of implicit flushing. Does it make a difference when running this while?

[Baez]

Still haven't figured out how to get this to work. Any help is great.