Re: Making Thumbnails

> > I have a form where I allow a user to upload either a jpg, png, or gif. > > I'd like to have PHP automatically generate a thumbnail to scale; however, I > > don't know what function to use. > > There is no decent built in function to do this. I use the command line > conversion tools from the pbmplus package. I was planning on implementing a feature similar to this using the GD library. Your comment makes me curious - what drawbacks would there be with doing something like this: ImageCreateFrom(GIF|JPEG|PNG) ImageCreate (for the thumbnail) Use GetImageSize to determine scaling and positioning (e.g. rather than distorting, we'd like to center the image on a $Color background) ImageCopyResized to copy from the source to the thumbnail ImageJPEG to store the thumbnail somewhere in the webroot