mich dobelman wrote:
Currently my web server supports only php4.
I want to know how to parse the xml and get the
element value using dom. I thought they have similar
function for getting element by id or tag name, so
far i haven't find anyting like that except fro PHP5 with
Domdocument. Any help is appreciated.
I heartily recommend upgrading to PHP5 and DOM extension,
it's much better than PHP4's DOM XML. Nevertheless, I hope
this helps:
$xml = '<?xml version="1.0"?>
<book>
<title>hhelo</title>
</book>' ;
// here we traverse shallowly all the children nodes of a
// given node and add node values of all the text nodes
// found to the result
function get_value ( $node )
{
$result = '' ;
$sub_nodes = $node -child_nodes ( ) ;
foreach ( $sub_nodes as $sub_node )
{
if ( $sub_node -node_type ( ) == XML_TEXT_NODE )
{
$result .= $sub_node -node_value ( ) ;
}
}
return ( $result ) ;
}
$doc = domxml_open_mem ( $xml ) ;
// method #1
// here we get all the <titleelements in the document,
// then get the contents of the first one of them
$titles = $doc -get_elements_by_tagname ( 'title' ) ;
$result_1 = get_value ( $titles [ 0 ] ) ;
// method #2
// here we get the first element node child of the root
// element, then get its contents
$books = $doc -child_nodes ( ) ;
$book_ix = $title_ix = 0 ;
while ( $books [ $book_ix ++ ] -node_type ( ) !=
XML_ELEMENT_NODE ) ;
$titles = $books [ -- $book_ix ] -child_nodes ( ) ;
while ( $titles [ $title_ix ++ ] -node_type ( ) !=
XML_ELEMENT_NODE ) ;
$result_2 = get_value ( $titles [ -- $title_ix ] ) ;
// method #3
// the same thing, only using XPath
$xpath = $doc -xpath_new_context ( ) ;
$result =
$xpath -xpath_eval ( '//book/title/text()' ) ;
$result_3 = $result -nodeset [ 0 ] -content ;
--
Pavel Lepin
