In all that time no one has learned anything about PHP. I’m not complaining, one of my favorite things about PHP is that it’s unpopular so it’s not used for resume driven development which usually pollutes a language’s eco system.
I think this is all the OP, in the original thread they said they wrote their own TILs down for the day or for the week. And I guess they simply don’t use PHP, just like they don’t use C# ;)