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Posted by Angelo Zanetti on 03/30/05 16:17
use a SQL statement to check if that number exists if not then its fine
if it does then generate another no and check again, until there is a
unique number generated.
hope this helps
angelo
William Stokes wrote:
>Hello,
>
>I got a bit frustrated with image upload stuff with different image name
>problems. So I created a system that gives the uploaded imaged a random
>numeric name between 1-10 000 000 and saves the file to a server folder and
>the image name to mysql DB.
>
>Is there a so sort of a problem here that I am not thinking of? I only can
>imagine problem that the rand() gives the same value twice. But I cant see
>this as a major problem because there would be maybe not more than 1000
>uploaded pictures. So the chance is at worst something like 1:10 000 that
>same name is created to the image.
>
>Anyway if same name is created what's the best way to check that? I was
>thinking of putting the image name field in DB as a unique field. That would
>do it? Right?
>
>Thanks again
>-Will
>
>
>
--
Angelo Zanetti
Z Logic
[c] +27 72 441 3355
[t] +27 21 464 1363
[f] +27 21 464 1371
www.zlogic.co.za
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