Using XML

hey i have an xml file thats used by a few of my ASP.NET pages and i want to use the same data in PHP.

my XML file is

Code:

---

<?xml version="1.0" standalone="yes"?>
<Articles>
        <link>
                <ID>2</ID>
                <Title>Reading and Writing to files with Classic ASP</Title>                               
                <URL>http://www.mindlessant.co.uk/docs/in...O_Beginner.htm</URL>
        </link>
        <link>
                <ID>1</ID>
                <Title>How Safe Is Your Microsoft Software Now</Title>
                <URL>http://www.mindlessant.co.uk/article...ftware_Now.htm</URL>
        </link>
</Articles>

---

And i want to return an array of <link></link> but i can only seem to print out just the values.

PHP Code:

---

<?
$open_stack = array();
$parser = xml_parser_create();
xml_set_element_handler($parser,"start_handler","end_handler");
xml_set_character_data_handler($parser,"character_handler");
xml_parser_set_option($parser,XML_OPTION_CASE_FOLDING,0);
xml_parse($parser,implode('',file("article.xml"))) or die(format_error($parser));
xml_parser_free($parser);

$data = array();


function start_handler($p,$name,$atts){
    global $open_stack;
    $open_stack[] = array($name,"");
}

function character_handler($p,$txt){
    global $open_stack;
    $cur_index = count($open_stack)-1;
    $open_stack[$cur_index][1].=$txt;
}
function end_handler($p,$name){
    global $open_stack;
    $el = array_pop($open_stack);
/*i think its something to do with this seciton but im not sure */
    if($name =="Title")
        print "<b>$el[1]</b><br/>";
    if($name=="URL"){
        print "<i>$el[1]</i><p>";
    }
}
function format_error($p){
    $code = xml_get_error_code($p);
    $str = xml_error_string($p);
    $line = xml_get_current_line_number($p);
    return "XML ERROR ($code): $str at line $line";
}

?>

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really confused about it and want to learn how to use XML in php properly. Thanks