Detect encoding charset character set Western European (Windows) or UTF-8 file in PHP

Detect encoding charset character set Western European (Windows) or UTF-8 file in PHP

    $strEncode = mb_detect_encoding($contents, "UTF-8, ISO-8859-1");
    if ($strEncode == 'ISO-8859-1') {
      $contents = mb_convert_encoding($contents, 'UTF-8', 'CP1252');
    }

    $contents = mysql_real_escape_string($contents);