On 7/10/2013 3:37 PM, Ajay Garg wrote:
Thanks Jim and Anthony.

You are right, your solution is doable.

But one thing I am a little skeptical about, is what would be the
percentage of the people willing to suggest a new name "immediately",
versus the percentage of people who would like to cancel the current
upload, and come back "later" after walking and coming up with a new name.

Anyhow, let me sleep over it :)

your solution is really a special case of Jim's solution :)

Thanks guys for the quick replies; I am obliged, really.

On Thu, Jul 11, 2013 at 12:59 AM, Anthony Wlodarski <ant92...@gmail.com>wrote:

Is there anything that would prevent you from somehow uniquely knowing who
the user is uploading the file. For example you mentioned "client'.  If
you know
who the client is you can append that to the filename or prepend it, for
destination string (second parameter to the function call).  That way it
is unique
to that client.


On Wed, Jul 10, 2013 at 2:15 PM, Ajay Garg <ajaygargn...@gmail.com> wrote:

Thanks Jim and Matijn for the quick replies.
I will try to have a workaround.

On Wed, Jul 10, 2013 at 11:09 PM, Matijn Woudt <tijn...@gmail.com> wrote:

On Wed, Jul 10, 2013 at 7:21 PM, Ajay Garg <ajaygargn...@gmail.com>

Hi all.

I have a requirement, wherein I need to allow vanilla uploads of files
to a HTTPD server.

Any client can upload any number of files (one at a time).
Also, there is just one directory, where the files get stored
"finally" (that is, after being copied from the temporary location,
via "move_uploaded_file")

Also, I have been able to get the simple file uploading running via
PHP, by picking up one of the numerous "Hello World" examples
available :)

Now, I am facing the following use-case ::

User 1 starts uploading a large file, say "big_file.avi".

Meanwhile, user 2 also starts uploading a (different) file, but with
the same name "big_file.avi".

In an ideal scenario, user 2 should be prompted with a message, that a
file of the same name is already being uploaded by someone else
Is there a way to do this?

( Note that, had the user 2 started uploading AFTER user 1 had
finished with the upload, we could probably modify the PHP-script at
the sever-side, to let user-2 know that a file of the same name
already exits. But I am failing to find a solution, when the user 2
starts the upload WHILE the large file of user 1 is in the process of
completing uploading).

Any way the issue may be solved?

I will be grateful for any pointers :)



This is not possible with PHP, PHP will not know about the file until
upload is completed. You can use HTML5 or flash(not recommended) for an
alternative way of uploading, and then you can check the file name in

- Matijn


Anthony W.

That's why I said you would have to do a cleanup periodically. People who walk away could lose their session perhaps and the page wiht the hidden temp name buried in it, so they would have to do their upload from the beginning again. If they didn't lose their session and therefore that screen, then they could still respond and things would flow smoothly.

so - who is scanning these files for viruses and what not? It's one thing to host them but if you are going to let users view them on their clients you could be spreading things.

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