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<?php class A {} class B { public function __construct(A $a) { } } $r = new ReflectionMethod('B', '__construct'); var_dump($r->getParameters()[0]->getName(), $r->getParameters()[0]->isDefaultValueConstant());
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught ReflectionException: Internal error: Failed to retrieve the default value in /in/jAIIN:11 Stack trace: #0 /in/jAIIN(11): ReflectionParameter->isDefaultValueConstant() #1 {main} thrown in /in/jAIIN on line 11
Process exited with code 255.

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