I can't answer on your first topic, but the second:
On 22.5.2007 10:23 Uhr, Vesselin Kenashkov wrote:
> Hello everybody,
> Issue #2:
> Xpath on nodes.
> Let we have the example:
> -----------------
> $str =
> '<rootnode><level1_node1><level2_node1></level2_node1></level1_node1><level1_node2></level1_node2></rootnode>';
>
>
> $x = new SimpleXMLElement($str);
>
> $r1 = $x->xpath('/*');
> print $r1[0]->getName();//prints rootnode
>
> $r2 = $x->level1_node1[0]->xpath('/*');
> print $r2[0]->getName();//prints rootnode
>
> $z = clone $x->level1_node1[0];
> $r3 = $z->xpath('/*');
> print $r3[0]->getName();//prints rootnode
>
> //print $z->getName();//ok
> ------------------
That's how it works also in ext/dom (and IMHO as it's supposed to work),
but the "workaround" is easy:
$r2 = $z->xpath('./*');
works as you would expect it.
chregu
> I personally think that the xpath must be evaluated against the node which
> method is called, not always against the rootnode.
> So in the second example I would expect it to return level1_node1, and
> especially in the thirds example.
> Even in the third example the xpath is evaluated against the original XML
> structure, not the subnode (level1_node1).
> I think this is incorrect and leads to a confusion - for example we can
> pass
> a node to a function like:
> --------
> function do_something($node)
> {
> //print $node->getName();//prints correct - the name of the supplied
> node - level1_node1
> $r1 = $node->xpath('/*');
> print $r1[0]->getName();
> }
>
> do_something(clone $x->level1_node1[0]);
> --------
> The do_something function is not aware at all about the full xml structure
> and one could think that the expression will be evaluated just against the
> supplied node, but it is not that the case.
>
> Please give your comments - do you find this functionality OK, is it a bug,
> or I miss something.
>
>
> Vesselin Kenashkov
>
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