Description:
------------
When scaling an image using the GD function imagescale(), the image is rotated anti-clockwise by 90 degree automatically.

This happens most frequently when the given image has a greater height than width, and was shot by camera or mobile.

Test script:
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<?php
	$filename="C:\inetpub\wwwroot\\apc\\img\\1.JPG";
	$pic=imagecreatefromjpeg($filename);
	$ratio=imagesy($pic)/imagesx($pic);		//=height/width
	$height=136;
	$width=136/$ratio;
	$pic=imagescale($pic,$width,$height);
	imagejpeg($pic,"min//1.jpeg",86);
	imagedestroy($pic);
?>

Expected result:
----------------
image with the following w/h

width=136/ratio;
height=136;

height is greater than width, the image should be presented vertically.

Actual result:
--------------
image with the following w/h

width=136;
height=136/ratio;

width is greater than height, the image is presented horizontally, because it's rotated anti-clockwise by 90 degree comparing to the original image.

I have uploaded the script and sample picture to my website:
https://www.swuplaf.cn/abc/test.php    //script
https://www.swuplaf.cn/abc/img/1.JPG    //original picture
https://www.swuplaf.cn/abc/min/1.jpeg    //scaled picture