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

This also works:

$img = imagecreatetruecolor(100,100);

// ... processing

ob_start();              // start the buffer
imagejpeg($img);         // output image to buffer
$size = ob_get_length(); // get size of buffer (in bytes)
ob_end_clean();          // trash the buffer

And now $size will have your size in bytes.