' . $text . '';
} else {
$parts[] = '' . $text . '';
}
}
$count = count($parts);
if ($count === 1) return $parts[0];
$prefix = implode(', ', array_slice($parts, 0, $count - 2));
$suffix = implode(' & ', array_slice($parts, -2));
return $prefix !== '' ? $prefix . ', ' . $suffix : $suffix;
}
?>