/**
* Returns true if every character in the parameter is an uppercase letter
* in the current locale.
*
* @param string $string The string to test.
* @param string $charset The charset to use when testing the string.
*
* @return boolean True if the parameter was uppercase.
*/
public function isUpper($string, $charset = null)
{
return Horde_String::upper($string, true, $charset) === $string && Horde_String::isAlpha($string, $charset);
}
