XMl parsing query in php - php

Question

I'm parsing xml nodes and I'm doing something wrong but I don't know what.
I have this xml:
$xml=" <root>
<info>
<company/>
<user_id>43</user_id>
<currency>EUR</currency>
</info>
<products>
<product>
<id>1336</id>
<pn>NX.RZNAA.003</pn>
<stock>1.00</stock>
</product>
<product>
<id>1337</id>
<pn>NX.RZNAA.004</pn>
<stock>4.00</stock>
<item_number>5</item_number>
</product>
</products>
</root>";
As you can see I have two "product" nodes with child nodes. But in first node "product" I have one node less then in second. In second the node "item_number" is added (it's optional node, if it has value it is in xml otherwise not) . When I'm parsing this nodes my parser returns value from second nodes "product" even if I'm on first node.
Anyone know what is the problem here?
Here is my code:
$xmlDoc = new DOMDocument();
$xmlDoc->load($xml) ;
$xpath = new DOMXPath($xmlDoc);
$tagForCount="count(//".$arrayPolja[0].")";
$x=$xmlDoc->getElementsByTagName("product");
$xpath = new DomXpath($xmlDoc);
$count = 3;
$arrayPolja[0] = "id";
$arrayPolja[1] = "pn";
$arrayPolja[2] = "stock";
$arrayPolja[3] = "item_number";
$r=0;
foreach ($x as $product) {
$i=0;
while ($i<=$count)
{
$polje=$arrayPolja[$i];
$values[$i]=$xpath->query($polje, $product)->item($r)->textContent;
$i++;
}
$r++;
}

Answer 1

For one, the second iteration in the loop is overriding the values of your array "$values" which is why you'd only be seeing the values from the second product node (if you are inspecting the "$values" array which is what I'm assuming you are doing).
Try this:
$xmlDoc = new DOMDocument();
$xmlDoc->load($xml);
$xpath = new DOMXPath($xmlDoc);
$x = $xmlDoc->getElementsByTagName("product");
$array = array('id','pn','stock','item_number');
$values = array();
foreach ($x as $product) {
$data = array();
// node name here
$data['node'] = $product->nodeName;
foreach ($array as $v){
$obj = $xpath->query($v, $product)->item(0);
if (gettype($obj) == 'object'){
$data[$v] = $obj->textContent;
}
}
$values[] = $data;
}
echo '<pre>' . print_r($values, true). '</pre>';
That should produce this:
Array
(
[0] => Array
(
[node] => product
[id] => 1336
[pn] => NX.RZNAA.003
[stock] => 1.00
)
[1] => Array
(
[node] => product
[id] => 1337
[pn] => NX.RZNAA.004
[stock] => 4.00
[item_number] => 5
)