How to confirm the user's change of his photo vk api?

Question

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I call the method
photos.saveOwnerPhoto
. At the output, I get an array - photo_hash, photo_src, photo_src_big, photo_src_small. In general, everything is as above. Shows that the picture has loaded and gives links to them. But the avatar doesn't change.
I go to the documentation of the method, I find the line:

After successful execution, it returns an object containing the photo_hash and photo_src fields (when working via VK.api, the method will return the photo_src, photo_src_big, photo_src_small fields). The photo_hash parameter is required for the user to confirm that their photo has been changed via the saveProfilePhoto Javascript API method call. The photo_src field contains the path to the uploaded photo.

What is saveProfilePhoto ? It's not in the documentation. I suspect this is purely a method for flash and iframe applications that bring up a confirmation dialog. Is it possible to somehow confirm the avatar without flashes and third-party applications and dialog boxes, but purely on the php server?