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<?php class A implements JsonSerializable{ public $baz = 10; function jsonSerialize(){ return ['bar' => 20]; } } class B implements JsonSerializable{ function jsonSerialize(){ return ['foo' => (new A)->jsonSerialize()]; } } echo json_encode(new B, JSON_PRETTY_PRINT);

This is an error 500

Value for `_results` contains invalid data `array`


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