Image Upload / Rename

[empnorton]

I am allowing users to upload images to a folder in the webdirectory for includion in the article they are posting. In order to make sure that there is no conflict with filenames, I am renaming each file as it goes up with mktime(). in other words: logo.gif turns into 1037673553.gif.

Is this the best way to do this, or would I be better of generating some sort of random number instead? Or should I just use one of the scripts that auto-increments a filename?

Thanks.

[azkworld]

I would suggest creating subdirs with user names and leaving file name intact.
Files with same name uploaded by same user will overwrite the old file. Options such as warnings possible, etc. Let them rename their file before uploading if needed.
We do something similar, and we also keep versions, e.g.
/uploads/joe/logo.gif/v1/logo.gif
next time user joe uploads file logo.gif it goes into
/uploads/joe/logo.gif/v2/logo.gif
$ver = 1;
while(file_exists("maindir/$user/$file_name/v$ver/")
$ver++;
users are actually quite happy same name is used -- helps them realize they already uploaded this file (when they have), and perhaps update the file once to have new pic in all articles.

[azkworld]

I would suggest creating subdirs with user names and leaving file name intact.
Files with same name uploaded by same user will overwrite the old file. Options such as warnings possible, etc. Let them rename their file before uploading if needed.
We do something similar, and we also keep versions, e.g.
/uploads/joe/logo.gif/v1/logo.gif
next time user joe uploads file logo.gif it goes into
/uploads/joe/logo.gif/v2/logo.gif
$ver = 1;
while(file_exists("maindir/$user/$file_name/v$ver/")
$ver++;
users are actually quite happy same name is used -- helps them realize they already uploaded this file (when they have), and perhaps update the file once to have new pic in all articles.

[azkworld]

I would suggest creating subdirs with user names and leaving file name intact.
Files with same name uploaded by same user will overwrite the old file. Options such as warnings possible, etc. Let them rename their file before uploading if needed.
We do something similar, and we also keep versions, e.g.
/uploads/joe/logo.gif/v1/logo.gif
next time user joe uploads file logo.gif it goes into
/uploads/joe/logo.gif/v2/logo.gif
$ver = 1;
while(file_exists("maindir/$user/$file_name/v$ver/")
$ver++;
users are actually quite happy same name is used -- helps them realize they already uploaded this file (when they have), and perhaps update the file once to have new pic in all articles.