How to generate random name of person using php?

Thanks anyone in advance for answering/attempting to answer my question.

I'm currently using a php script to generate random string, but now I'd like to generate random name of a person instead of generating just a random string. My old code looked something like this:

<?php
function RandomString($length) {
    $keys = array_merge(range('a', 'z'), range('A', 'Z'));
    for($i=0; $i < $length; $i++) {
        $key .= $keys[array_rand($keys)];
    }
    return $key;
}

print RandomString(6);
?>

Thanks Again in Advance.