上传到服务器后，将自动交换宽度和高度值。 [PHP]

I used this function getimagesize($file_tmp_name) to get width and height of the image I uploaded. The function returned a 2D array: $width = arr[0] and $height = arr[1];

On my PC, the image demension is: 3024 x 4032 (w x h) But on the server side, the image width and height values are swapped. 4032 x 3024 (w x h)

 var_dump($width); // C:\wamp64\www\upload_script\Image.php:89:int 4032
 var_dump($height); // C:\wamp64\www\upload_script\Image.php:90:int 3024

I'm not sure what caused this and how can I make it consistent. I appreciate any help.

You can check first comment on exif_read_data function in php manual.

Code copied from there:

<?php
$image = imagecreatefromstring(file_get_contents($_FILES['image_upload']['tmp_name']));
$exif = exif_read_data($_FILES['image_upload']['tmp_name']);
if(!empty($exif['Orientation'])) {
    switch($exif['Orientation']) {
        case 8:
            $image = imagerotate($image,90,0);
            break;
        case 3:
            $image = imagerotate($image,180,0);
            break;
        case 6:
            $image = imagerotate($image,-90,0);
            break;
    }
}
// $image now contains a resource with the image oriented correctly
?>