Recently authored articles? We have an internet filled with 20 years of PHP tutorials, and unfortunately for beginners there's not an easy way to evaluate if something utilizes modern best practices or is an Experts Exchange post from 2001.
Anyway, Google links are pretty much already ordered by popularity.
A nice big "this answer is outdated, see [other answer]" note does wonders.
This is particularly distressing in the case of security vulnerabilities. Vulnerable code being copied from Stack Overflow into consumer applications isn't hypothetical, it's been empirically demonstrated (https://www.aisec.fraunhofer.de/en/stackoverflow.html), yet the community and company refuse to accept responsibility and address the problem. (Of course the developer creating the application is more responsible, but Stack Overflow is in a position where they could help protect innocent end users and the common good.)
Pinning of accepted answers to the top of the list was a good idea when the site was young. These days, it prevents updated better answers from taking the place of ten-year-old misinformation.