RSS parsing with PHP and SimpleXML: How to enter namespaced items? - php

Question

I am parsing the following RSS feed (relevant part shown)
<item>
<title>xxx</title>
<link>xxx</link>
<guid>xxx</guid>
<description>xxx</description>
<prx:proxy>
<prx:ip>101.226.74.168</prx:ip>
<prx:port>8080</prx:port>
<prx:type>Anonymous</prx:type>
<prx:ssl>false</prx:ssl>
<prx:check_timestamp>1369199066</prx:check_timestamp>
<prx:country_code>CN</prx:country_code>
<prx:latency>20585</prx:latency>
<prx:reliability>9593</prx:reliability>
</prx:proxy>
<prx:proxy>...</prx:proxy>
<prx:proxy>...</prx:proxy>
<pubDate>xxx</pubDate>
</item>
<item>...</item>
<item>...</item>
<item>...</item>
Using the php code
$proxylist_rss = file_get_contents('http://www.xxx.com/xxx.xml');
$proxylist_xml = new SimpleXmlElement($proxylist_rss);
foreach($proxylist_xml->channel->item as $item) {
var_dump($item); // Ok, Everything marked with xxx
var_dump($item->title); // Ok, title
foreach($item->proxy() as $entry) {
var_dump($entry); //empty
}
}
While I can access everything marked with xxx, I cannot access anything inside prx:proxy - mainly because : cannot be present in valid php varnames.
The question is how to reach prx:ip, as example.
Thanks!

Answer 1

Take a look at SimpleXMLElement::children, you can access the namespaced elements with that.
For example: -
<?php
$xml = '<xml xmlns:prx="http://example.org/">
<item>
<title>xxx</title>
<link>xxx</link>
<guid>xxx</guid>
<description>xxx</description>
<prx:proxy>
<prx:ip>101.226.74.168</prx:ip>
<prx:port>8080</prx:port>
<prx:type>Anonymous</prx:type>
<prx:ssl>false</prx:ssl>
<prx:check_timestamp>1369199066</prx:check_timestamp>
<prx:country_code>CN</prx:country_code>
<prx:latency>20585</prx:latency>
<prx:reliability>9593</prx:reliability>
</prx:proxy>
</item>
</xml>';
$sxe = new SimpleXMLElement($xml);
foreach($sxe->item as $item)
{
$proxy = $item->children('prx', true)->proxy;
echo $proxy->ip; //101.226.74.169
}
Anthony.

Answer 2

I would just strip out the "prx:"...
$proxylist_rss = file_get_contents('http://www.xxx.com/xxx.xml');
$proxylist_rss = str_replace('prx:', '', $proxylist_rss);
$proxylist_xml = new SimpleXmlElement($proxylist_rss);
foreach($proxylist_xml->channel->item as $item) {
foreach($item->proxy as $entry) {
var_dump($entry);
}
}
http://phpfiddle.org/main/code/jsz-vga

Answer 3

Try it like this:
$proxylist_rss = file_get_contents('http://www.xxx.com/xxx.xml');
$feed = simplexml_load_string($proxylist_rss);
$ns=$feed->getNameSpaces(true);
foreach ($feed->channel->item as $item){
var_dump($item);
var_dump($item->title);
$proxy = $item->children($ns["prx"]);
$proxy = $proxy->proxy;
foreach ($proxy as $key => $value){
var_dump($value);
}
}