Description:
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ReflectionFunction reports that mysqli_get_client_info has 1 required parameter. This is incorrect. Currently, it ignores the values of its parameters.


See the example provided with https://secure.php.net/manual/en/mysqli.get-client-info.php#refsect1-mysqli.get-client-info-examples

> /* We don't need a connection to determine
>   the version of mysql client library */

(Also, the documented function signature should be changed to indicate that the parameter is optional, but that's not the main part of this issue)

Test script:
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var_dump((new ReflectionFunction('mysqli_get_client_info'))->getNumberOfRequiredParameters());
var_dump((new ReflectionFunction('mysqli_get_client_info'))->getNumberOfOptionalParameters());

Expected result:
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// 0 required parameters, might as well say 1 optional parameter
int(0)
int(1)


Actual result:
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// incorrectly says there is 1 required parameter

int(1)
int(1)