original_string: public static function isLower($string, $charset)
      {
          return ((self::lower($string, true, $charset) === $string) &&
                  self::isAlpha($string, $charset));
      }
code: public static function isLower($string, $charset)
      {
          return ((self::lower($string, true, $charset) === $string) &&
                  self::isAlpha($string, $charset));
      }
code_tokens: public static function isLower ( $ string , $ charset ) { return ( ( self :: lower ( $ string , true , $ charset ) === $ string ) && self :: isAlpha ( $ string , $ charset ) ) ; }
docstring: Returns true if ever character in the parameter is a lowercase 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 lowercase.
docstring_tokens: Returns true if ever character in the parameter is a lowercase letter in the current locale .