The problems with PHP aren't really with the concept of dynamic typing as such, but rather with the somewhat curious semantics and really awkward standard library. These are relics from the past that are, unfortunately, very hard to fix without a "Python 3000 moment", and all the problems that brings. Although PHP 8 does fix a bit of it (various comparisons and operators are a bit better now) there's still a lot of it remaining, especially in the standard library IMHO.
They're a bit overblown now I feel, and I wouldn't throw out the language and ecosystem just because a comparator got fussy. You probably won't win any "Code is Art" contests, and if you want to do computer science work then why even waste the time hating PHP, it was never for that. PHP is a web application workhorse, and it's really exceedingly good at that task.
It's not just the comparison that's fussy; if that would be it then that would be fine. It's mostly the really messy, inconsistent, and difficult to use standard library that turns me off personally. And this isn't about inconsistent argument order or naming, I can deal with that as well, but stuff like not being able to create temporary files well, or not being able to check for specific errors in fopen(), and a long list of similar things. These are things that make writing simple, correct, and elegant programs very hard, or sometimes even impossible.