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<?php class Test { public function __debugInfo() { return $this; } } var_dump(new Test);
Output for 7.2.0 - 7.2.34, 7.3.0 - 7.3.30, 7.4.0 - 7.4.23, 8.0.0 - 8.0.11, 8.1rc1 - rc2
Fatal error: __debuginfo() must return an array in /in/0EEPh on line 9
Process exited with code 255.

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