Description

The following code:

<?php
class OverrideValidDirectoryIterator extends DirectoryIterator {
    public function valid() {
        return null;
    }
}

class OverrideCurrentDirectoryIterator extends DirectoryIterator {
    public function current() {
        return null;
    }
}

Resulted in this output:

Deprecated: Return type of OverrideValidDirectoryIterator::valid() should either be compatible with DirectoryIterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/S7tkM on line 4

Fatal error: Declaration of OverrideCurrentDirectoryIterator::current() must be compatible with DirectoryIterator::current(): mixed in /in/S7tkM on line 10

Obviously the first here is just a form of the documented 8.1 deprecation of overriding core classes without matching return typehints, but unlike for other methods on DirectoryIterator, overriding current() in this way is a fatal error and not an E_DEPRECATED, and the ReturnTypeWillChange attribute has no effect.

PHP Version

PHP 8.1.3

Operating System

No response