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<?php var_dump(array_map( function($_) { return $_->getName(); } , (new ReflectionFunction('extract'))->getParameters() ));
Output for git.master, git.master_jit, rfc.property-hooks
array(3) { [0]=> string(5) "array" [1]=> string(5) "flags" [2]=> string(6) "prefix" }

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