Executing PHP Tasks While Letting A User Continue To Browse?
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.
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