Subscription or I like to download

Hello, I would like a content blocker for my web, I have a web page where I upload content downloadable and I would like a script that blocks the download link, so that the user has to subscribe on youtube or like on Facebook to download the content or make to the download link, someone can do me a little job, this script already exists but only for wordpress, I need it for my php website, my budget is 10 USD