> -----Original Message----- > From: Peter Ford [mailto:p...@justcroft.com] > Sent: 20 November 2009 15:18 > To: php-general@lists.php.net > Subject: [PHP] Does PHP block requests? > > I have a tricky problem. > > I'm trying to make a progress feedback mechanism to keep users > informed about a > slowish process on the server end of a web app. The backend is > generating a PDF > file from a bunch of data which extends to many pages. I can keep > tabs on the > progress of this generation by working out how many lines of data is > present, > and how much of it has been processed. I use that information to set > a session > variable with a unique name - so for each step I set > > $_SESSION['some-unique- > name']=>Array('total'=>$totalLines,'count'=>$linesProcessedSoFar);
The progress-counter Ajax script uses a session -- but does the PDF generator use the same session? If so, I'm guessing you don't manually close the session at any point and all the progress-checking calls are blocked until the session auto-commits at the end of the generator script. To counter this, you need to manually session_commit() somewhere near the beginning of the generator script. Cheers! Mike -- Mike Ford, Electronic Information Developer, Libraries and Learning Innovation, Leeds Metropolitan University, C507, Civic Quarter Campus, Woodhouse Lane, LEEDS, LS1 3HE, United Kingdom Email: m.f...@leedsmet.ac.uk Tel: +44 113 812 4730 To view the terms under which this email is distributed, please go to http://disclaimer.leedsmet.ac.uk/email.htm
