How to check width and height on a photo.

How do I get the size of a photo. ?
Not the size in Kb but the size in measurement.

I have some photo that must be max 100 pixels wide, so before upload, I need it to check the width og height. Is that possible. ?

[man]getimagesize/man.

OK.

But I need to check it before upload.
So I have tried with this

$image = getimagesize($_FILES['upload']);

where upload is the name of the input form

<input name="upload" type="file">

The form works, and I can upload the photo. I can also check the type with this line:

$filetype = $_FILES['upload']['type'];

So it's only the getimagesize that doesn't work.

You can't check the image size or anything else (even the type) before upload with PHP. Maybe javascript can do that.

After it's uploaded, and still in the temp directory, you should be able to get the image size with something like this:

getimagesize($_FILES['upload']['temp_name'];

Thank you very much..

That was just what I had in mind, and it works :o)