It's easy to see that checked exceptions are bad... no other language tried to copy the idea. A worthy experiment, but that's all. What else did not get copied? Classloaders.
Actually, PHP has checked exceptions exactly like Java
Well, that I did not know. But I'll take it as the exception that proves the rule if only one language copied it.
It's certainly not an endorsement of checked exceptions. Just an FYI. And, further, PHP is basically just copying every feature they can from Java for the last several years.