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<?php // No properties key. $schema = ['foo' => 'bar']; if (($schema['properties'] ?? NULL) === []) { $schema['properties'] = 'created'; } print_r($schema); if (($schema['properties'] ?? []) === []) { $schema['properties'] = 'created'; } print_r($schema); // Empty properties key. $schema = ['properties' => []]; if (($schema['properties'] ?? []) === []) { $schema['properties'] = 'created'; } print_r($schema);
Output for 8.1.19 - 8.1.33, 8.2.11 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14
Array ( [foo] => bar ) Array ( [foo] => bar [properties] => created ) Array ( [properties] => created )
preferences:
95.91 ms | 406 KiB | 5 Q