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<?php $prop_def['type'] = [NULL, 'string']; $type = $prop_def['type'] ?? 'null'; \var_dump($type);
Output for 8.1.0 - 8.1.29, 8.2.0 - 8.2.23, 8.3.0 - 8.3.11
array(2) { [0]=> NULL [1]=> string(6) "string" }
preferences:
53.92 ms | 406 KiB | 5 Q