XML and PHP5 DOM

Question

I am developing an application were I need to transform XML documents that look like this(words.xml):

<?xml version='1.0' encoding='ISO-8859-1'?>
<!DOCTYPE words SYSTEM "words.dtd">
<words>
<word id="word_1">Alfa</word>
<word id="word_2">Beta</word>
<word id="word_3">Gamma</word>
<word id="word_4">Delta</word>
<word id="word_5">Zeta</word>
</words>

Using PHP5 and DOM. I would like the result to be (in this case):

word_1 = Alfa
word_2 = Beta
word_3 = Gamma
word_4 = Delta
word_5 = Zeta

My PHP code:

<?php

$xmlHitzakDok = new DOMDocument();
$xmlHitzakDok->load("words.xml");

$x = $xmlHitzakDok->documentElement;
foreach ($x->childNodes AS $item)
  {
  print $item->nodeName . " = " . $item->nodeValue . "<br />";
  }
?>

I am getting no results. Which is the problem?

Wouldn't it be something more along the lines of "node->attribute( 'id' )" = ? — ethrbunny
– ethrbunny, Commented Apr 19, 2012 at 16:15
error reporting and display errors set properly? no error found? — Hajo
– Hajo, Commented Apr 19, 2012 at 16:20

hakre · Accepted Answer · 2012-05-13 15:33:43Z

3

The problem is not that $xmlHitzakDok->documentElement is not the <words> element, it's the document itself, it does not contain any data.

I suggest using xpath to get the elements you want.

$xPath = new DOMXPath($xmlHitzakDok);

foreach ($xPath->query('//words/word') AS $item)
{
    echo $item->getAttribute('id') . " = " . $item->nodeValue . "<br/>";
}

edited May 13, 2012 at 15:33

hakre

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answered Apr 19, 2012 at 16:25

gen_Eric

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10 Comments

gen_Eric Over a year ago

Works for me (codepad.org/oi3XP7cm). Are you sure that words.xml exists? Try using $xmlHitzakDok->load(realpath("words.xml"));.

gen_Eric Over a year ago

Or try doing if($xmlHitzakDok->load("words.xml") === FALSE){die('error loading file');} My guess is the file isn't being loaded correctly.

Haritz Over a year ago

Hi, I did that and "error loading file" message appeared on the browser. I dont know why the file cant be loaded. "words.xml" is located on the same folder as the php, exactly in /var/www/myfolder/. Why is this? Any idea @Rocket? Thanks.

Haritz Over a year ago

I finally solved the problem, had to change privileges to words.xml. Thanks for your time @Rocket.

hakre Over a year ago

@Rocket: $xmlHitzakDok->documentElement is the <words> element, you can check that with ->documentElement->tagName easily, see as well codepad.org/YdCCk4LX (just FYI)

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