PHP - Parsing XML object created by simplexml_load_string()

Question

I am trying to read an attribute value of the root node of an XML fed into the simplexml_load_string() method in PHP.

Here is an example,

<data status="Active">
 <user> <userid> 1 </userid> </user>
 <user> <userid> 2 </userid> </user>
<data>

I am trying to read the value of 'status' in the above XML string:

echo $xml->user[0]->userid;
echo $xml->attributes()->status

The statements don't work too, var_dump() outputs "NULL".

meder omuraliev · Accepted Answer · 2010-09-23 07:43:24Z

4

echo (string)$userNode->attributes()->status should work

answered Sep 23, 2010 at 7:43

meder omuraliev

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2 Comments

Tomalak Over a year ago

Is the explicit cast necessary with echo or is it merely "good style"?

meder omuraliev Over a year ago

@Tomalak - in the simplexml implementations ive messed with, I had to explicitly do it or it'd try to echo the object reference out. perhaps in newer implementations you don't have to do it since the toString method automatically does it?

VolkerK · Accepted Answer · 2010-09-23 08:29:26Z

2

Besides the attributes() method you can simply access the element's attributes by treating the element object like an array (SimpleXMLElement implements ArrayAccess)

$xml = simplexml_load_string('<user status="Active"></user>');
echo 'status=', $xml['status'];

But to access attributes in other namespaces you have to use attributes() (afaik).

answered Sep 23, 2010 at 8:29

VolkerK

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Comments

Jake N · Accepted Answer · 2010-09-23 07:44:56Z

0

$xml = simplexml_load_string('<user status="Active"></user>');

echo $xml->attributes()->status;

answered Sep 23, 2010 at 7:44

Jake N

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Immanuel · Accepted Answer · 2010-09-23 09:40:25Z

0

Thanks for the replies... Parsing was not really the problem.

I missed the following cURL parameters,

curl_setopt ($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt ($curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.1) Gecko/20061204 Firefox/2.0.0.1");

I was treating a boolean value (cURL response) as an XML file :)

Thanks all...

answered Sep 23, 2010 at 9:40

Immanuel

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kta · Accepted Answer · 2012-04-20 13:38:40Z

0

Sorry but in your example XML you did not close your end <data> tag.

answered Apr 20, 2012 at 13:38

kta

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