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<?php if (isset($a)) return $a; else throw new Exception();
Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.30, 8.0.0 - 8.0.22, 8.1.0 - 8.1.9
Fatal error: Uncaught Exception in /in/U1s6r:3 Stack trace: #0 {main} thrown in /in/U1s6r on line 3
Process exited with code 255.

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