Creating Thumbnails from large pictures

AlexP

What I am trying to find out here is how it is possible to create a thumbnail from a larger file.

I don't need a full script, but the method or the function that it is used for this purpose.

I have a plain PHP installed without any additional modules so any help based on that assumption would greately help.

Thank you

Alex

_SuperString

As far as I know you will need an additional Library, there is a few but GD seems to be the one used most. GD also supports many other graphic manipulation/creation functions and supports JPEG/PNG and possible more (not gif though).
Search for GD Library on either php.net or google.

If you are lazy, then just change your img tag to specify the new size, like this <img src="pic.jpg" width="33"> were 33 is the new size. This is not a great idea, but its a nice lazy option.

AlexP

Thanks but, the problem is that not all of the cheapest ISP's provide PHP with GD library.

I' m trying to find a way to upload a picture as a thumbnail, without GD.

coditoergosum

Without the GD image library you're going to have a very hard time working with images. I know it's possible to use the gimp for image manipulation through server side scripts, but chances are if your host doesn't provide GD, then they're not going to let you do this either.

Besides, if your host doesn't provide it, you probably need to find a different host. I've never seen a pay host that didn't have it. Some hosts have newer version of the library, which is nice, but nearly all hosts will have it.

GD also supports many other graphic manipulation/creation functions and supports JPEG/PNG and possible more (not gif though).

GD supports JPEG, PNG, BMP, and a pseudo image type GD.

I have a script on my site that does this very thing, and uses the GD library. Check it out here: http://gagon.net/phpimg/. Let me know if you have any questions about it, or would like to see the source.

Ryan_Sanders

I would love to see that source.. I am always having to open every file and resize because if I do it through <img src='blah.jpg' width='432' height='232'> then it looks bad.

coditoergosum

Here is the source to that script. I don't care if you use my code... but it would be nice to get a link on your site if you do use it. I don't really care either way... but I have spent a LOT of time on it (eventhough it's still kind of rough).

http://gagon.net/phpimg/source.phps