The irony is that PHP has improved massively in perf vs the relative gains of Ruby.

https://onlinephp.io/benchmarks

https://serpapi.com/blog/benchmarking-ruby-3-1-yjit-ruby-2-7...

Apart from measuring very different things, the PHP page compares PHP releases over something like 25 years vs. about 3 years of Ruby releases.

Look at PHP 7.2 onwards, which is a similar timeframe, and the improvements are fairly modest.