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<?php class A { public function __construct(final public string $foo) { } } $a = new A('test'); $c = new ReflectionClass($a); foreach ($c->getProperties() as $prop) { var_dump($prop->isFinal()); var_dump($prop->isPromoted()); } var_dump($a->foo);
Output for 8.3.5
Fatal error: Cannot use the final modifier on a parameter in /in/TdZfV on line 5
Process exited with code 255.
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