[mapserver-users] not unique image filenames problem

[Daniel Morissette]

Vincent, and all,

This must be happening on a server running PHP as an Apache module,
correct?  You shouldn't experience this problem if you setup your PHP as
a CGI instead of as a module.

See http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?PHPMapScriptCGI

Daniel



Vincent Schut wrote:
> 
> 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.