[mapserver-users] not unique image filenames problem

[Vincent Schut]

Regarding my previous mail,

I "solved" the problem :-)
I now use a workaround using the php tempnam function, combining this with a 
timestamp, and using this with mapscript saveImage in stead of saveWebImage. 
Now I think I have quite unique filenames... :-)

Maybe a suggestion to future versions of mapserver/script to use a similar 
way to create their web filenames?

Thanks for the reactions, they helped to get me on the right track.

Vincent.

On Thursday 28 March 2002 11:19, Vincent Schut wrote:
> Hi folks,
>
> I'm running into a strange problem. Propably I'm doing something wrong :-)
>
> I'm using php/mapscript to create (quite simple) raster images and view
> them in a web page where you can zoom in/out and pan etc.
> Everything works well, except that sometimes not the desired image of the
> next zoom (or pan) operation appears, but an image that was created some
> steps ago. I found out that this happens because the $map->saveWebImage
> does *not* always create a new, unique name for the image to be saved in
> the temp directory. If an image with the same name already exists, the save
> apparently doesn't succeed and the old image is loaded.
>
> Something wrong with the way mapserver creates "unique" image file names?
> How to solve this? Anybody had the same experience?
>
> Curiously,
>
> Vincent Schut.