Hi, I used the PHPExcelreader to read the excel file from php. some excel files couldn't be read. The excel data contain alphabets,numbers and symbols. The following error is displayed Notice: iconv() [function.iconv]: Detected an illegal character in input string in /data/16/1/58/113/1547602/user/1666331/htdocs/invoice/reader.php on line 794 Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in /data/16/1/58/113/1547602/user/1666331/htdocs/invoice/reader.php on line 794 Notice: iconv() [function.iconv]: Detected an incomplete multibyte character in input string in /data/16/1/58/113/1547602/user/1666331/htdocs/invoice/reader.php on line 794 Notice: Uninitialized string offset: 1414168141 in /data/16/1/58/113/1547602/user/1666331/htdocs/invoice/reader.php on line 255 Notice: Uninitialized string offset: 1414168142 in /data/16/1/58/113/1547602/user/1666331/htdocs/invoice/reader.php on line 255 Notice: Uninitialized string offset: 1414168143 in /data/16/1/58/113/1547602/user/1666331/htdocs/invoice/reader.php on line 258 PHP version is 5.2.6. Please help me.