Image Uploads Skewed

Anon

I've written a simple script to upload images to the server. It works for small images, but the larger the images get the worse the images look after they have been uploaded to the server. The images on the server are the same size as the images on the client machine, but when I ftp a second copy of the image to the server (using CuteFTP) and do a diff, it says the images are different, although their sizes are the exact same. Does anyone know why the uploaded images (using the PHP copy) keep coming out different from the originals? Are they being uploaded as ascii rather than binary? Is there anyway to correct this problem? I even changed servers to see if the problem was the server, but I still get the same results. Any help would be greatly appreciated.

Thanks,
Michael.....

Anon

Sounds like the data is being corrupted in transfer, I don't know why it would do this as I have been using php to transfer large files (over 1M😎 with no problems. The only problem I have ever really encountered with the file uploads is the timeout issues with slow connections, but there's not much I can do about that.

Maybe you should toss up some of your file handling code, maybe their is an error in it?

Anon

Shaun,

I tested the raw file that was uploaded to the /tmp directory, and it was already corrupted. What happens when your process timesout in the middle of uploading an image? Maybe I'm timeing out and it just isn't finishing uploading the images, and thats why they are all skewed because the data is incomplete? I'm going to try and increase the timeout from 30 seconds to maybe a 60 seconds and see if the images are more complete. If I increase this value in the php.ini file, do I need to recompile something or do I just need to restart Apache? Thanks for your input!

Michael.....

Anon

It might solve the problem, I don't know, I always use fast connections and fast servers to test my sites so it's not really something that I've come across yet, thou supposedly if the file fails to upload the script should know about it... are you checking to make sure that the files actualy exist before copying them over to their final locations? And if so what code are you using to check it and also what code do you use to copy? Any of these may be a contributing factor...

If you post up some of your code it will be much easier to determine the exact nature of the problem.