parse XML into mysql

Hi
i have an XML like this:
<?xml version="1.0" encoding="ISO-8859-1" standalone="yes"?>
<parlast modified="20/06/2008 12:03">
<nodo name="test" nodoid="3893">
<group name="test2 groupid="12322">
<event name="test3" eventid="6939592"
closetime="21/06/2008 02:15">
<dettagli name="PRIMO DETTAGLIO"
dettagliid="6939592" etid="10">
<ok="1xxxxxxxx" id="34494265"
prezzo="1.70" status="Open"/>
<ok="2xxxxxxxx" id="34494266"
prezzo="3.30" status="Open"/>
<ok="3xxxxxxxx" id="34494267"
prezzo="4.50" status="Open"/>
</dettagli>
<dettagli name="SECONDO DETTAGLIO"
dettagliid="6939595"
etid="120">
<ok="4xxxxxxxx" id="34494274"
prezzo="2.20" status="Open"/>
<ok="5xxxxxxxx" id="34494275"
prezzo="2.15" status="Open"/>
<ok="6xxxxxxxx" id="34494276"
prezzo="4.50" status="Open"/>
</dettagli>
</event>
</group>
</nodo>
</parlast>

i should insert a specific data into mysql db

i used some classes e function ( simple xml , xml to array ecc.ecc )
but i failed

Some of you have already made this issue?


################################################## ##################
here it's my code
<?php


class Parser {


var $struct = array(); // holds final structure
var $curptr; // current branch on $struct
var $parents = array(); // parent branches of current branch


function Parser($url) {
$this->curptr =& $this->struct; // set ref to base
$xmlparser = xml_parser_create();
xml_set_object($xmlparser, $this);
xml_set_element_handler($xmlparser, 'tag_open', 'tag_close');
xml_set_character_data_handler($xmlparser, 'cdata');
$fp = fopen($url, 'r');


while ($data = fread($fp, 4096))
xml_parse($xmlparser, $data, feof($fp))
|| die(sprintf("XML error: %s at line %d",
xml_error_string(xml_get_error_code($xmlparser)),
xml_get_current_line_number($xmlparser)));


fclose($fp);
xml_parser_free($xmlparser);
}


function tag_open($parser, $tag, $attr) {
$i = count($this->curptr['children']);
$j = count($this->parents);
$this->curptr['children'][$i]=array(); // add new child element
$this->parents[$j] =& $this->curptr; // store current position
as
parent
$this->curptr =& $this->curptr['children'][$i]; // submerge to
newly created child element
$this->curptr['name'] = $tag;
if (count($attr)>0) $this->curptr['attr'] = $attr;


}


function tag_close($parser, $tag) {
$i = count($this->parents);
if ($i>0) $this->curptr =& $this->parents[$i-1]; // return to
parent element
unset($this->parents[$i-1]); // clear from list of parents
}


function cdata($parser, $data) {
$data = trim($data);
if (!empty($data)) {
$this->curptr['value'] .= $data;
}
}



}


$myparser = new Parser('xml.xml');

print_r($myparser->struct);


################################################## ##################

thx