Remove parent node in php - php

Question

I want to remove all product with category=phones from my xml:
<SHOP>
<ITEM>
<CATEGORY>Computers</CATEGORY>
<NAME>DELL</NAME>
</ITEM>
<ITEM>
<CATEGORY>Computers</CATEGORY>
<NAME>IBM</NAME>
</ITEM>
<ITEM>
<CATEGORY>Phones</CATEGORY>
<NAME>Apple</NAME>
</ITEM>
</SHOP>
I tried this solutions:
$doc = new DomDocument();
$doc->load('product.xml');
$xpath = new DomXPath($doc);
$nodes = $xpath->query('ITEM/CATEGORY');
for ($i = 0; $i < $nodes->length; $i++) {
$node = $nodes->item($i);
if ($node->nodeValue == 'Phones') {
$node->parentNode->removeChild($node);
}
}
But it delete only attribute CATEGORY but I need to delete all ITEM node with thit category. How should i change the code?

Answer 1

You were removing category from item. You want to remove item from shop (Both parents). Easiest way to do this:
$node->parentNode->parentNode->removeChild($node->parentNode);
See it in action at 3v4l here:
<?php
$xml_string = <<<EOT
<SHOP>
<ITEM>
<CATEGORY>Computers</CATEGORY>
<NAME>DELL</NAME>
</ITEM>
<ITEM>
<CATEGORY>Computers</CATEGORY>
<NAME>IBM</NAME>
</ITEM>
<ITEM>
<CATEGORY>Phones</CATEGORY>
<NAME>Apple</NAME>
</ITEM>
</SHOP>
EOT;
$doc = new DomDocument();
$doc->loadXML($xml_string);
$xpath = new DomXPath($doc);
$nodes = $xpath->query('ITEM/CATEGORY');
for ($i = 0; $i < $nodes->length; $i++) {
$node = $nodes->item($i);
if ($node->nodeValue == 'Phones') {
$node->parentNode->parentNode->removeChild($node->parentNode);
}
}
echo $doc->saveXML();