Description:
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ReflectionFunction returns 0 for getNumberOfRequiredParameters for random_bytes() and random_int(), but should return 1 and 2, respectively. 

Test script:
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$rf = new ReflectionFunction('random_bytes');
var_dump($rf->getNumberOfParameters());
var_dump($rf->getNumberOfRequiredParameters());

$rf = new ReflectionFunction('random_int');
var_dump($rf->getNumberOfParameters());
var_dump($rf->getNumberOfRequiredParameters());


Expected result:
----------------
int(1)
int(1)
int(2)
int(2)


Actual result:
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int(1)
int(0)
int(2)
int(0)