Description:
------------
The arguments informations returned by the reflection API on the spl_autoload_register function is incomplete: only the first parameter (autoload_function ) is listed

Test script:
---------------
<?php

// http://3v4l.org/LOUY1

$function = new \reflectionFunction('spl_autoload_register');

echo 'Parameters:' . PHP_EOL;

foreach ($function->getParameters() as $parameter)
{
    echo '* ' . $parameter->getName() . PHP_EOL;
}

echo str_repeat('-', 20) . PHP_EOL;

echo $function->getNumberOfRequiredParameters() . '/' . $function->getNumberOfParameters() . PHP_EOL;

Expected result:
----------------
Parameters:
* autoload_function
* throws
* prepend
--------------------
0/3

Actual result:
--------------
Parameters:
* autoload_function
--------------------
0/1