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run code in 300+ PHP versions simultaneously
<?php class Foo { public ?string $x; } var_dump(((new ReflectionClass(Foo::class))->getProperty('x'))->getDefaultValue());
Output for 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12
NULL

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49.76 ms | 406 KiB | 5 Q