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<?php class A extends ArrayObject { public function offsetGet($offset) { isset($this[$offset]); } } $a = new A; $a['one'] = 10; echo $a['one'];
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of A::offsetGet($offset) should either be compatible with ArrayObject::offsetGet(mixed $key): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/5ZlYT on line 4

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