W3Schools Tryit Editor

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<!DOCTYPE html><html><body>​<?phpfunction myFamily($lastname, ...$firstname) {  $txt = "";  $len = count($firstname);  for($i = 0; $i < $len; $i++) {    $txt = $txt."Hi, $firstname[$i] $lastname.<br>";  }  return $txt;}​$a = myFamily("Doe", "Jane", "John", "Joey");echo $a;?>​</body></html>​