PHP GetImageSize反转宽度/高度

Question

I have the image attached below with these specifics: Width: 3024px Height: 4032px

The getimagesize() function returns the opposite:

$size = GetimageSize("test.jpg");
echo "image width: " . $size[0] . ", height: " . $size[1];

image width: 4032, height: 3024

How is this possible?

You can try yourself using the image below.

* UPDATE * Removed image from the post and added a link to zip file (containing the image) because the image works fine after being processed from stack overflow. Tinyupload ZIP

Screenshot of the result:

Answer 1

The exif orientation tag cannot be fully trusted, as it really depends on the program or device setting the tag that the correct value is used.

This article explains the exif orientation tag better and why it's a mess. http://www.daveperrett.com/articles/2012/07/28/exif-orientation-handling-is-a-ghetto/