PHP: The three letters that shut down sites all over the internet today

Two critical vulnerabilities were discovered in the PHP programming language, affecting major websites such as 4chan, DeviantArt, Wikipedia, and a dog blog. The bugs are connected to AI systems used on these sites, which rely on PHP as a foundation. The issues are significant, as PHP is used to power many websites, including those built on WordPress. The vulnerabilities are considered critical and have caused issues for several high-profile sites.