I believe your criticism is equivalent to the old "macs only have one mouse button" argument. Sure, false==0 and "false"==0 both evaluate to true, but is that really a bad thing? It is well known and well documented behavior. I would even argue that this is an important feature of PHP. And if you want strict comparison, there's still the === operator, just like in JavaScript.
I think you're getting downvoted because your comment was irrelevant to the topic of lambdas and recursion. Your second comment uses a technique that I will call "ad hominem defense" from now on; upvoted for making me think of this amusing expression.
