Re: "Invalid hexadecimal character reference" error parsing an XML withSAX processor

I have found the problem. In the XML file it was an & entity and it 
creates the problem in the PHP XML parser.

So It could be enough to replace & with [amp] before the parsing and 
then, when you have to ouput the result, replace back to the &

r.


Roberto Battistoni ha scritto:
> Hy to everyone
> 
> I have created a simple SAX parser for a very simple XML file.
> 
> When I run the code that follows I get this error:
> 
> "Invalid hexadecimal character reference"
> 
> The strange thing is If I change the "chunk size" for the data I send
> to the parser, the error row changes. This behaviour is very strange!
> 
> I have done a one more test and I have set the chunkSize equals to the
> file size and I have the same error at the end of the file.
> 
> The same XML file processed with another language doesn't raise any
> error.
> 
> I use PHP 5.2.3 and a LAMP (AppServ Open Project - 2.5.9 for Windows)
> on
> a Windows VISTA PC.
> 
> The code I have used follows:
> 
> public function create_parser($filename)
> {
>   $this->fp = fopen($filename, 'r');
>   $this->fsize = filesize($filename);
>   $this->parser = xml_parser_create();
> xml_set_element_handler($this->parser,
> 'Parser::start_element','Parser::end_element');
>   xml_set_character_data_handler($this->parser, 'Parser::char_data');
> 
> }
> 
> public function parse()
> {
>    //$blockSize = 4*1024;
>    $blockSize = $this->fsize;    echo 'Lunghezza file: '.$this-
>> fsize;
> 
>    while ($data = fread($this->fp, $blockSize))
>    {
>        //$data = str_replace('\n','',$data);
>        if (!xml_parse($this->parser, $data, feof($this->fp)))
>        {
>               echo 'Parser error: ('.xml_get_current_byte_index($this-
>> parser).')
> 
> \''.xml_error_string($this->parser).'\' at line '.
>               xml_get_current_line_number($this->parser). ' at col ' .
>               xml_get_current_column_number($this->parser);
>               return false;
>         }
>    }
>    return true;
> 
> }
> 
> A piece of the XML following:
> 
> <?xml version="1.0" encoding="ISO-8859-1"?>
>    <!DOCTYPE dblp SYSTEM "dblp.dtd">
>    <dblp>
>      <incollection mdate="2002-01-03"
> key="books/acm/kim95/AnnevelinkACFHK95">
>        <author>
> Jurgen Annevelink
>        </author>
>        <author>
> Rafiul Ahad
>        </author>
>        <author>
> Amelia Carlson
>        </author>
>        <author>
> Daniel H. Fishman
>        </author>
>        <author>
> Michael L. Heytens
>        </author>
>        <author>
> 
> ....
> 
> The Industrial Information Technology Handbook
>        </booktitle>
>        <url>
> db/books/collections/IITHandbook2005.html#SeyfarthK05
>        </url>
>      </incollection>
> </dblp>
>