XML and PHP

[orlah]

I've created a class to read an XML file. I've created 3 methods startElement, endElement and charData. I have added xml_set_object($this->myparser, &$this).
But I keep on getting the message
"Warning: Unable to call handler startElement() in /home/httpd/html/ioco/Extract/Extract_program/XMLRequestReader.php on line 49"
I checked (also 2 other persons) for typing errors. We can't find any.
I transferred the complete code to another PC and tried my class on a localhost apache server. Here my code functions.
So I think it has something to do with apache.
Can anybody help me, I'm getting desperate.

Thanks.

[e-mail]

I added the complete class code

?php

/ Doel: XMLReader voor het lezen Request.xml
Versie: 1.0
Datum: 16/11/2002
/

require_once("./Backend/XMLReader.php");
require_once("./Backend/Request.php");
require_once("./Backend/FileHandler.php");

class XMLRequestReader extends XMLReader{

var $file = "./xmlfiles/XMLInitfiles/Requests.xml";
var $request;
var $dummyrequest;
var $fh;
var $questionname;
var $currenttag;
var $currentattrib;
var $xmlparser;
var $data;

function XMLRequestReader(){
	$this->currenttag = "";
	$this->currentattrib = "";
	$this->xmlparser = xml_parser_create();
	$casefold = xml_parser_get_option($this->xmlparser, XML_OPTION_CASE_FOLDING);
	$targetencoding = xml_parser_get_option($this->xmlparser, XML_OPTION_TARGET_ENCODING);
	if($casefold == 1){
		xml_parser_set_option($this->xmlparser, XML_OPTION_CASE_FOLDING, false);
	}

	xml_set_object($this->xmlparser, &$this);
	xml_set_element_handler($this->xmlparser, 'startElement', 'endElement');
	xml_set_character_data_handler($this->xmlparser, "characterData");

	//$this->XMLReader();
	$this->fh = new FileHandler($this->file, "r");
	$this->request = new Request();
}

function getXMLRequest($question){
	$this->questionname = $question;
	$error = $this->fh->open();
	if(!($error)){
		while(!($this->fh->isEof())){
			$this->data = $this->fh->read();
			if(!xml_parse($this->xmlparser, $this->data, $this->fh->isEof())){
				$this->clearParser();
				return $this->request;
			}
		}
		$this->clearParser();
	}
	return $this->request;
}

function startElement( $parser, $name, $attribs){
	$this->currenttag = $name;
	$this->currentattribs = $attribs;

	switch($name){
		case "requests":
			break;
		case "request":
			$this->dummyrequest = new Request();
			break;
		case "requestname":
			break;
		case "requestaantalparameters":
			break;
		case "requestsqlstring":
			break;
		default:	
			break;
	}
}

function endElement($parser, $name){
	switch($name){
		case "requests":
			break;
		case "request":
			if($this->dummyrequest->isRequest($this->questionname)){
				$this->request = $this->dummyrequest;
			}
			$this->dummyrequest = null;
			break;
		case "requestname":
			break;
		case "requestaantalparameters":
			break;
		case "requestsqlstring":
			break;
		default:	
			break;
	}	
	$this->currenttag = "";
	$this->currentattribs = "";
}

function characterData($parser, $data){
	switch($this->currenttag){
		case "requests":
			break;
		case "request":
			break;
		case "requestname":
			$this->dummyrequest->setRequestName($data);
			break;
		case "requestaantalparameters":
			$this->dummyrequest->setRequestAantal($data);
			break;
		case "requestsqlstring":
			$this->dummyrequest->setRequestString($data);
			break;
		default:	
			break;
	}
}

}

?>