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<?php class Counter implements Countable { public function count() { var_dump(func_get_args()); } } $counter = new Counter; count($counter, 1); $counter->count(1);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of Counter::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/mgMkY on line 4 array(0) { } array(1) { [0]=> int(1) }

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