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<?php interface IX {} class X implements IX {} class Y {} function foo(IX $x) {} $rf = new \ReflectionFunction('foo'); $rp = $rf->getParameter('x'); $x = new X; var_dump($rp->getType(), $rp->getClass());
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined method ReflectionFunction::getParameter() in /in/UddWm:10 Stack trace: #0 {main} thrown in /in/UddWm on line 10
Process exited with code 255.

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