CallbackFilterIterator::__construct() expects exactly 2 parameters, 0 given
Argument 1 passed to CallbackFilterIterator::__construct() must implement interface Iterator, null given
CallbackFilterIterator::__construct() expects exactly 2 parameters, 1 given
-CallbackFilterIterator::__construct() expects parameter 2 to be a valid callback, no array, string, closure or functor given
+CallbackFilterIterator::__construct() expects parameter 2 to be a valid callback, no array or string given
CallbackFilterIterator::__construct() expects parameter 2 to be a valid callback, array must have exactly two members
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