delete child node in xml file with php

Question

i'm trying to remove a child node from an xml. my script is working..but it removing a few childs... and not just the one i want to remove...

can you look and tell me what is my problem?

The XML file:

<?xml version="1.0" encoding="UTF-8" ?> 
<events>
   <record>
      <id>3</id> 
   </record>
   <record>
      <id>2</id> 
   </record>
   <record>
      <id>1</id> 
   </record>
 </events>

The delete.php file:

<?php
header("Content-type: text/html; charset=utf-8");

$record = array(
    'id' => $_POST['id'],
);
$users = new DOMDocument();
$users->load("xmp.xml");

$suser = simplexml_load_file("xmp.xml");
$count = 0;
$user = $users->getElementsByTagName("record");

foreach($user as $value)
{
   $tasks = $value->getElementsByTagName("id");
   $task  = $tasks->item(0)->nodeValue;

   if ($task == $record["id"]) {
    $users->documentElement->removeChild($users->documentElement->childNodes->item($count));
   }
   $count++;
}

$users->save("xmp.xml");

?>

why is this line in the code: $suser = simplexml_load_file("xmp.xml");? — Gordon
– Gordon, Commented Jan 12, 2011 at 10:20

Community · Accepted Answer · 2017-05-23 10:33:08Z

3

Fetch the node you want to remove. Call removeChild() on it's parentNode, e.g.

$node->parentNode->removeChild($node);

On a sidenote, you can do this with less code when using XPath:

$id  = /* some integer value */ 
$dom = new DOMDocument;
$dom->load('file.xml');
$xpath = new DOMXPath($dom);
$query = sprintf('/events/record[./id = "%d"]', $id);
foreach($xpath->query($query) as $record) {
    $record->parentNode->removeChild($record);
}
echo $dom->saveXml();

will remove the <record> element with an <id> child node having the value stored in $id.

Run code on Codepad.

More examples: remove element from xml

edited May 23, 2017 at 10:33

CommunityBot

11 silver badge

answered Jan 12, 2011 at 10:10

Gordon

318k76 gold badges548 silver badges566 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

Ofir Hadad Over a year ago

can you be more detailed? Where should i put this line in my script?

Gordon Over a year ago

@Ofear instead of your removeChild call.

Ofir Hadad Over a year ago

This is great! Works perfect!! can you please add in the first line $id = "some integer number" ; for others who will look for answer? Thanks you very much gordon!

Collectives™ on Stack Overflow

delete child node in xml file with php

1 Answer 1

3 Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related