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<?php $a = false; var_dump($a['abc']); var_dump($a['abc'] ?? '');
Output for git.master, git.master_jit
Warning: Trying to access array offset on value of type bool in /in/4JIAY on line 5 NULL string(0) ""
Output for rfc.property-hooks
Warning: Trying to access array offset on false in /in/4JIAY on line 5 NULL string(0) ""

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