How to obtain width and height of image after rotating it?

Question

How can I get the width and height of the image after rotating it using imagerotate() in PHP?

Here is my code:

<?php
// File and rotation
$filename = 'test.jpg';
$degrees = 180;

// Content type
header('Content-type: image/jpeg');

// Load
$source = imagecreatefromjpeg($filename);

// Rotate
$rotate = imagerotate($source, $degrees, 0);

// Output
imagejpeg($rotate);

// Free the memory
imagedestroy($source);
imagedestroy($rotate);
?>

But what I want to do before doing the output, is that I want to get the width and height of the rotated image. How can I do that?

Answer 1

I'm sure you can do something similar to this:

$data = getimagesize($filename);
$width = $data[0];
$height = $data[1];

Another option is this:

list($width, $height) = getimagesize($filename);

Answer 2

imagerotate returns an image ressource. Hence you cannot use getimagesize which works with an image file. Use

$width = imagesx($rotate);
$height = imagesy($rotate);

instead.