Copy Media Files Between Sites Within a Multisite Network
Recently I’ve been working with this functionality in one of my plugins and now I decided to share it with you.
But I always want my tutorials to be more practical, so check what we are going to create:

The whole tutorial consists of two parts – in the first one I will show you a ready to use function that allows to move media from one site of a multisite network to another, in the second – we will create a custom bulk action for media files.
How to to Add a Custom Media Uploader Button in WordPress Admin
When you create some sort of meta boxes or maybe a custom options page, sometimes you need fields like an image upload button or a file uploader.
Personally for me it is OK if the website settings has a simple input text field where I can place the image URL, but it is not enough for the regular user, it is not even professional when you create a user interface – that’s what I think.
