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<?php $a['a']['b']['c'] = ($a['a']['b']['c'] ?? 0) + 1; echo json_encode($a), PHP_EOL; $a['a']['b']['c'] = ($a['a']['b']['c'] ?? 0) + 1; echo json_encode($a), PHP_EOL;
Output for git.master, git.master_jit, rfc.property-hooks
{"a":{"b":{"c":1}}} {"a":{"b":{"c":2}}}

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