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Posted by Good Man on 04/26/06 18:57
Hi there
I was wondering if someone could help me out with the following two
situations.
In a lot of my web apps, it seems that if i launch a PHP script that takes
a long time to complete, the user is unable to browse/use the rest of the
website until the tasks completes. Is there a way to avoid this?
Specifically, app #1 let's a user choose which files to include in a zip
file, then PHP makes the .zip file on the server and streams it to the user
via fopen/fread. So, as the user is downloading a file on the side (it
presents them with the open/save dialog) they are unable to browse the rest
of the PHP-based site until the download completes; clicking on any links
to pages does nothing, the browser just sits there until the file has been
downloaded, THEN the screen advances.
I am experiencing a similar thing with a PHP mail delivery system. I tried
to create a work-around: a pop-up window that sends an 'exec' command to
the a php-script that sends the email to a few hundred recipients. Again,
even though this action is being done in a pop-up window (and via the
command line, no less), the user is paralyzed in the main window until the
action completes.
Can anyone tell me why this is happening, and what some workaround might
be?
Thanks.
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