Parsing a XML file using simplexml_load_file return empty object

Question

 <?xml version="1.0" ?> <aws:UrlInfoResponse xmlns:aws="http://alexa.amazonaws.com/doc/2005-10-05/"> <aws:Response xmlns:aws="http://awis.amazonaws.com/doc/2005-07-11"> <aws:OperationRequest> </aws:OperationRequest> <aws:UrlInfoResult> <aws:Alexa> <aws:TrafficData> <aws:DataUrl type="canonical">google.com/</aws:DataUrl> <aws:Rank>1</aws:Rank> </aws:TrafficData> </aws:Alexa> </aws:UrlInfoResult> <aws:ResponseStatus xmlns:aws="http://alexa.amazonaws.com/doc/2005-10-05/"> <aws:StatusCode>Success</aws:StatusCode> </aws:ResponseStatus> </aws:Response> </aws:UrlInfoResponse>

All i want to parse is rank from this xml document. while trying so what iam doing is ...

 $xml= simplexml_load_file("path of the file saved"); echo $xml->Response->UrlInfoResult->Alexa->TrafficData->Rank;

but i am getting a error doing so .it says

 Notice: Trying to get property of non-object in C:\wamp\www\SEO Stats[Only Testing]\Tools\web_worth.php on line 13

the error is in this line

 echo $xml->Response->UrlInfoResult->Alexa->TrafficData->Rank; this line is referred as line no 13..

echo $xml->Response->UrlInfoResult->Alexa->TrafficData->Rank; — ravindar.dev
– ravindar.dev, Commented Apr 3, 2013 at 12:26

animuson · Accepted Answer · 2014-01-29 22:37:18Z

The parser was returning an empty object because according to the documentation you have to specify the prefixed namespace - so for example you want to use something like:

simplexml_load_file('/path/to/file.xml', null, null, 'aws', true);

working example

chiborg · Accepted Answer · 2013-04-03 12:28:44Z

You've probably got the result object nesting wrong, thus one of the objects in $xml->Response->UrlInfoResult->Alexa->TrafficData->Rank; is null. Try echoing every step separately:

echo $xml->Response; echo $xml->Response->UrlInfoResult; // etc ...

If the first echo returns nothing, then check if you need to output UrlInfoResponse instead or need to register namespaces first.

i did try echo them one by one .. Till echo $xml->Response->UrlInfoResult its show's nothing on screen and when i try to do this echo $xml->Response->UrlInfoResult->Alexa; It come up with a error..

Anthony Ferrillo · Accepted Answer · 2013-04-03 12:29:54Z

Ok, this is too vague, but you can always print the $xml value to see if it is actually an object or not, sometimes happens that the path is wrong. Try this code to see if the xml document is actually loaded:

<?php if (file_exists('/path/to/document.xml')) { $xml = simplexml_load_file('/path/to/document.xml'); print_r($xml); } else { exit('Failed to open /path/to/document.xml.'); }

?>

With this you should see the content of the xml document.

yes it's loading properlya and print_r($xml gives) SimpleXMLElement Object ( )

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