| public static escapeXmlAttrUnquoted ( $s ) : string | ||
| return | string | XML |
public static function escapeXmlAttrUnquoted($s)
{
$s = (string) $s;
return preg_match('#^[a-z0-9:-]+$#i', $s) ? $s : '"' . self::escapeXml($s) . '"';
}