How to get image resource size in bytes with PHP and GD?

Question

I\'m resizing images with php gd. The result is image resources that i want to upload to Amazon S3. It works great if i store the images on disk first but i would like to up

Answer 1

You could use PHP's memory i/o stream to save the image to and subsequently get the size in bytes.

What you do is:

$img = imagecreatetruecolor(100,100);
// do your processing here
// now save file to memory
imagejpeg($img, 'php://memory/temp.jpeg'); 
$size = filesize('php://memory/temp.jpeg');

Now you should know the size

I don't know of any (gd)method to get the size of an image resource.