When we started huijiwiki.com, PHP was the language of the choice. But it was not much a choice. MediaWiki was coded in PHP. It provided us a solid starting point to expand our idea.
Since then I have touched many languages and am moderately proficient in some of them. Among them, Go is my current favorite. Rust is the language I want to explore more.
Go as well as Rust has a very different nature compared to PHP.