XML_HTMLSax help!!!!

skolar

I'm trying to implement a class that parses out link from an HTML string. However, i'm having trouble with the referencing inside the callbacks for the element handlers. When its done parsing, the array i have to store the links goes back to null? Why is that?

Here is my code:


class ParseHTML {
	var $parser;
	var $links;
	function ParseHTML() {
		$this->parser = &new XML_HTMLSax();
		$this->parser->set_object($this);
		$this->parser->set_element_handler('open', 'close');
                $this->parser->set_data_handler('data');
		$this->links = array();
	}

function open($parser, $tag, $attr) {
	if($tag == "a") {
		if(count($attr) > 0) {
                            $hashed_link = md5($attr['href']);          	
			$this->links[$hashed_link] = $attr['href'];
		}
	}
}

function close($parser, $tag) { 
}


function parse($html) {
	$this->parser->parse($html);
	return $this->links;
}
}

Can someone please tell me how to do this? I really need to return those links when the parsing is done. Otherwise the parsing is useless. The referencing is getting to be confusing and i cant tell if the handlers are even accessing the right links array. How can i make sure its the array from the actual calling ParseHTML instance and not an anonymous copy of the instance.

Thanks in advance.

Weedpacket

$this->parser->set_element_handler('open', 'close');

I'm not 100% sure, but I think your callbacks need to be slightly different so that they refer to the object's methods

$this->parser->set_element_handler(array($this,'open'), array($this,'close'));

Similarly for 'data'.

skolar

i get this error when trying that:

HP Fatal error: Call to undefined function: array() in /usr/share/pear/XML/HTMLSax/XML_HTMLSax_States.php on line 55

Also, i'm using var_dump to see the contents of the ParseHTML object and it prints out a bunch of recursive information. Not sure if this is var_dump or what but i see that the links array is being added to. It shows it growing and whats in it. However at the end, the links array is null even though it was filled earlier.