ignore_user_abort() + flush()

[smith15]

Seems that if I have ignore_user_abort(); at the top of my page, but flush(); later on in the page and I exit the browser, the script stops running -- rather than continue to run "in the background" until the process is done.

Is it really the flush() or echo output that's causing this? Is there a workaround?

I want the script to keep running whether the user stays on that page or presses back or closes the browser. But I'd like to flush some output to the user in case they do stay on the page so they know what is happening.

This one has me baffled... but I need the functionality of both (display progress output and keep on running if they close the window).

Any suggestions?

[ir4z0r]

most webhost disable this function cause it can cause heavy load.
my webhost allows it though and I have no problems combining it
with flush() --> php430

i fear i don't know any workarounds for this 🙁

[smith15]

Originally posted by ir4z0r
most webhost disable this function cause it can cause heavy load.
my webhost allows it though and I have no problems combining it
with flush() --> php430

i fear i don't know any workarounds for this 🙁

Well it's our own server so I can do whatever I wish... is there something I need to change in the php.ini?

Or, maybe I'm just doing something wrong, do you have a sample of how you are doing it?

Thanks!

[ir4z0r]

<?PHP

//	WEBCAM-Copier

set_time_limit(0);
ignore_user_abort(1);

$webcam = "http://apage.com/indys.jpg";
$count = 0;
$LOOPS = 667;

flush();

for ($count = 1; $count < $LOOPS; $count++)
{
	echo $count . " / ";
	flush();

	$src  = fopen($webcam,"r");
	$dest = fopen($count . "_timessquare.jpg","w");

	$cont = fread ($src, 999999);
	if ($cont) echo " read. ";
	else echo " not read. ";

	if ($cont != null)
	{
		if (fwrite($dest, $cont)) echo " written. ";
		else echo " not written. ";
	}

	fclose($src);


	fclose($dest);
	flush();

	sleep (2);
}

?>

I used this script several times and it worked

[smith15]

ahhh thank you, for some reason I always used ignore_user_abort(); and it worked ok until now. But when I changed it to ignore_user_abort(1); it's working like it should, even with the flush.

Thank you!!!

[smith15]

Something related to this that has me baffled is my main windows opens a pop-up to do the processing (where i have the flush/abort stuff) but the main window will not redirect or do anything until the pop-up is done processing.

Is this a javascript issue, something I can basically say onClick load new window then move on, regardless of what's happening in the new window?

Here's how I launch the window:

   

<script language="javascript">
<!--
function ShowMenu(URL, WinTitle, WinWidth, WinHeight, WinLeft, WinTop){
    attr = "scrollbars=yes,resizable=yes,width=" + WinWidth + ",height=" + WinHeight + ",screenX=" + WinLeft + ",screenY=" + WinTop + ",left=" + WinLeft + ",top=" + WinTop + "";
    msgWindow=open(URL, WinTitle, attr);
    if (msgWindow.opener == null) msgWindow.opener = self;
	return true;
}

//-->
</script>


<FORM name="form" action="newpage.php" METHOD="GET" >
<SELECT NAME="mynewsletter">
<option value="1">Newsletter1</option>
</SELECT>
<INPUT TYPE=SUBMIT VALUE="Send" onClick="ShowMenu('newsletter__send.php?mynewsletter=' + document.form.mynewsletter.value + '','window',500,50,15,25)">
</form>

Any ideas why the main window would wait for the pop-up to finish processing? Is there a workaround?