Multisite bulk image compression only compresses full-size version of image

Hi! I’m using free version 3.3.0 and noticed that there seems to be a problem with bulk compressing images on multisites. When bulk compressing only the full size image gets compressed whereas compressing a single image directly from the media library does compress all registered image sizes.

Digging through the code I found that there seems to be a missing switch to the correct blog in includes\class-updraft-smush-task.php. Line 77 reads:

$files = array_merge(array('full' => $file_path), WPO_Image_Utils::get_attachment_files($attachment_id));

Comparing with lines 52 through 58, I replaced line 77 with this:

if (is_multisite()) {
	switch_to_blog($this->get_option('blog_id', 1));
	$files = array_merge(array('full' => $file_path), WPO_Image_Utils::get_attachment_files($attachment_id));
	restore_current_blog();
} else {
	$files = array_merge(array('full' => $file_path), WPO_Image_Utils::get_attachment_files($attachment_id));
}

Surely there is a better fix but i tried this with a few images and it seemed to work.

The media library on the affected multisite consists of a few thousand images, so I wanted to ask wether this is indeed a correct fix before I start compressing with unknown side effects.

• This topic was modified 1 year, 1 month ago by jolifanto.