Using PHP/JavaScript link to get information about site visitor
问题 Somebody is trying to phish me, they are pretending to be one of my close friends to humiliate both of us. This person has created a fake email account, impersonating the person, and trying to get personal info out of me. I made sure with my friend that it wasn't actually him, now we're trying to figure out who it is. I want to send them a link to some kind of PHP or JS page, to collect at least a little info about their client (browser, operating system, maybe ISP location?), and then