I created two PHP sites in 2011 that are still going, 15 years later. Code that got the job done but was terribly-written. Yesterday I spent a couple of hours with Claude, which modernised the code and eliminated a few egregious vulnerabilities. Some things broke in the migration and optimisation, but they were easy to fix.

It wasn’t worth my time to do this work myself, and paves the way to move a bunch of sites (including psalm.dev) off a $1,000/year server to something much cheaper.