如何使用Amazon Web Services插件为WordPress在我的S3存储桶上执行文件操作

I want to access my S3 bucket, and when I remove a file, use the delete_attachment hook to call to Amazon and delete those files ( we have a service that offloads files to S3 but doesn't delete them.

I've installed the Amazon Web Services plugin for WordPress but I'm not sure where to go from here.

Given a filename, I can remove it from the command line:

aws s3 rm s3://BUCKET/DIRECTORY/wp-content/uploads/2018/FILENAME.JPG

But I need to do this from PHP.

Say the file being deleted is:

https://example.com/wp-content/uploads/2018/04/file1234.png

Then I have the following code that runs on delete:

// define the delete_attachment callback 
function action_delete_from_amazon( $id ) { 
    $location = get_the_guid( $id ); // gets that url above
    $s3_filename = $bucket_name . strstr('/wp-content', $location )

    //
    // Call the Amazon S3 service here and 
    // delete all variations of the file...
    //

}; 

// add the action 
add_action( 'delete_attachment', 'action_delete_from_amazon', 10, 1 );