Honestly, this has the potential to change the World Wide Web (I use that term very deliberately, given that PHP powers the vast majority of the Internet globally, including some of the biggest sites). This could be as huge of a change as when single core processors went multi-core. It is not uncommon to nearly double your site's performance and halve your work as a developer/devops person.
Not to be too pedantic but while it powers the majority of websites, it doesn't power much of anyone's day-to-day internet usage (even counting Facebook's usage of Hack).
The other biggest example of PHP usage I can think off is Wikipedia.
Whilst PHP is considered dated now and the language has many faults, you can't critic how easy is to get started (drag drop files in a directory and you're done)
PHP isn't considered "dated". Modern PHP is excellent.