PHP XML Traversing gone awry

Question

I'm traversing an xml file as below:

<?xml version="1.0" encoding="ISO-8859-1"?>
<wrapper>
  <site base="http://www.example1.co.uk/" name="example 1">
    <page>page1/</page>
  </site>
  <site base="http://www.example2.co.uk/" name="example 2">
    <page>page2/</page>
  </site>
</wrapper>

And my php is this:

xml = simplexml_load_file("siteList.xml");
foreach ($xml->site as $site => $child) {
  foreach ($xml->$site->page as $a => $page) { 
    $endUrl = ($child["base"] . "" . $page);
    print_r($endUrl . "<br />");
  }
}

This technically works, but returns the following:

http://www.example1.co.uk/page1/
http://www.example2.co.uk/page1/

Instead of:

http://www.example1.co.uk/page1/
http://www.example2.co.uk/page2/

It's using the page from the previous loop somehow, I cannot work it out :'(

Thanks in advance!

Answer 1

You should be iterating over $child for the inner loop, but you are not. To fix it, change this

foreach ($xml->$site->page as $a => $page) {

to this

foreach ($child as $page) { // you don't even need the $a

You could also simplify the outer loop to foreach ($xml->site as $child) as you don't care about the key; and if you do this, renaming $child to $site would be a logical next step to improve readability.

Answer 2

It is using the page from the previous loop. Perhaps this change will help:

xml = simplexml_load_file("siteList.xml");
foreach ($xml->site as $site => $child) {
  foreach ($site->page as $a => $page) { 
    $endUrl = ($child["base"] . "" . $page);
    print_r($endUrl . "<br />");
  }
}