title: What should PHP's variable-length argument `...` token be referred to as?
body: <p>I recently learned about PHP's ... token (reference the <a href="http://php.net/manual/en/functions.arguments.php" rel="nofollow noreferrer">docs</a>) which is used to support variable-length argument lists.  What is the term for this token or how is it pronounced?  If it doesn't have a name, is their any similar functionality in another language which has a name?</p>