file_get_contents停止工作（Dropbox文件）

Question

I store some files in the public folder and call these using the php function file_get_contents().

This was working fine up until a few weeks ago, then suddenly, it no longer works.

Has something changed on Dropbox? I checked to see if the issue is with the file, so I placed it on another server and it works fine.

However, when trying to call the file from Dropbox, it doesn't work at all.

Any help would be really appreciated.

Thanks!