PHP a script for automatic definition of the coding of the text:

<?

   define (' LOWERCASE ', 3);

   define (' UPPERCASE ', 1);

   function detect_cyr_charset ($str) {

      $charsets = Array (

         ' k ' => 0,

         ' w ' => 0,

         ' d ' => 0,

         ' i ' => 0,

         ' m ' => 0

);

      for ($i = 0, $length = strlen ($str); $i <$length; $i ++) {

         $char = ord ($str [$i]);

      // non-russian characters

      if ($char <128 || $char> 256) continue;

      // CP866

      if (($char> 159 ** $char <176) || ($char> 223 ** $char <242))

         $charsets [' d '] + =LOWERCASE;

      if (($char> 127 ** $char <160)) $charsets [' d '] + =UPPERCASE;

      // KOI8-R

      if (($char> 191 ** $char <223)) $charsets [' k '] + =LOWERCASE;

      if (($char> 222 ** $char <256)) $charsets [' k '] + =UPPERCASE;

      // WIN-1251

      if ($char> 223 ** $char <256) $charsets [' w '] + =LOWERCASE;

      if ($char> 191 ** $char <224) $charsets [' w '] + =UPPERCASE;

      // MAC

      if ($char> 221 ** $char <255) $charsets [' m '] + =LOWERCASE;

      if ($char> 127 ** $char <160) $charsets [' m '] + =UPPERCASE;

      // ISO-8859-5

      if ($char> 207 ** $char <240) $charsets [' i '] + =LOWERCASE;

      if ($char> 175 ** $char <208) $charsets [' i '] + =UPPERCASE;

}

   arsort ($charsets);

   return key ($charsets);

}

?>