xml_get_current_column_number

Using the PHP Function xml_get_current_Column_Number()

A function is a group of code that can be called repeatedly within an application to perform a certain task. PHP has more than 1000 built-in functions, but you can also write your own custom ones.

The xml_get_current_column_number() is a simple function that retrieves the current column number for an XML parser. This information can be useful when you are trying to highlight the current element being parsed, or display a progress bar during the parsing process.

The first parameter, xml_parser, is a reference to the XML parser to get the current column number for. The second parameter, chunk, is the chunk of data that you are trying to parse. A document may be parsed in pieces by calling xml_parse() several times with new data, as long as the last chunk of data sent matches the isFinal parameter.

When a chunk of data is sent to an XML parser, the handlers for configured events will be called. These include events for starting and ending tags, character data, processing instructions, external parsed general entities, and declarations of notations. By default, all handlers that do not have a specific event target set will be passed character data and tag name information case-folded.

Character data is usually encoded in a specific character encoding, such as ISO-8859-1 or US-ASCII. When an XML parser is created, a target encoding can be specified, which will affect all character data it encounters (including the encoding of tag names and processing instructions). If the XML parser encounters characters that are not supported by its chosen target encoding, the problem characters are "demoted". This means that the troublesome character will be replaced by a question mark.

xml_get_current_column_number example

\XML_ERROR_INCORRECT_ENCODING => 'XML_ERROR_INCORRECT_ENCODING',
        \XML_ERROR_UNCLOSED_CDATA_SECTION => 'XML_ERROR_UNCLOSED_CDATA_SECTION',
        \XML_ERROR_EXTERNAL_ENTITY_HANDLING => 'XML_ERROR_EXTERNAL_ENTITY_HANDLING',
    ];

    /** * @return array */
    public static function castXml($h, array $a, Stub $stub, bool $isNested)
    {
        $a['current_byte_index'] = xml_get_current_byte_index($h);
        $a['current_column_number'] = xml_get_current_column_number($h);
        $a['current_line_number'] = xml_get_current_line_number($h);
        $a['error_code'] = xml_get_error_code($h);

        if (isset(self::XML_ERRORS[$a['error_code']])) {
            $a['error_code'] = new ConstStub(self::XML_ERRORS[$a['error_code']], $a['error_code']);
        }

        return $a;
    }
}

'feed_start_element', 'feed_end_element' );

        xml_set_character_data_handler( $this->parser, 'feed_cdata' );

        $status = xml_parse( $this->parser, $source );

        if (! $status ) {
            $errorcode = xml_get_error_code( $this->parser );
            if ( $errorcode != XML_ERROR_NONE ) {
                $xml_error = xml_error_string( $errorcode );
                $error_line = xml_get_current_line_number($this->parser);
                $error_col = xml_get_current_column_number($this->parser);
                $errormsg = "$xml_error at line $error_line, column $error_col";

                $this->error( $errormsg );
            }
        }

        xml_parser_free( $this->parser );
        unset( $this->parser );

        $this->normalize();
    }

break;
                    }
                } while (!feof($stream));
                fclose($stream);
            }
            else
            {
                $return = false;
            }

            $this->current_line = xml_get_current_line_number($xml);
            $this->current_column = xml_get_current_column_number($xml);
            $this->current_byte = xml_get_current_byte_index($xml);
            xml_parser_free($xml);
            return $return;
        }

        libxml_clear_errors();
        $xml = new XMLReader();
        $xml->xml($data);
        while (@$xml->read())
        {
            switch ($xml->nodeType)
            {