Help with Simplexml

[spurrdog]

Hi,  I'm new to php and coding in general.  I'm trying to parse xml from a remote device and access specific value data.

 

Here is the xml:

 

<?xml version="1.0" encoding="ISO-8859-1" ?>

- <Device id="S10011" hb="1935">

  <Group id="1" />

  <Group id="2" />

  <Group id="3" />

  <Group id="4" />

  <Group id="5" />

  <Group id="6" />

  <Group id="7" />

  <Group id="8" />

- <Group id="9">

- <Probe id="99">

  <Value>1.0</Value>

  </Probe>

- <Probe id="1">

  <Value>86.4</Value>

  </Probe>

- <Probe id="2">

  <Value>45.7</Value>

  </Probe>

- <Probe id="3">

  <Value>2.9</Value>

  </Probe>

- <Probe id="4">

  <Value>1.0</Value>

  </Probe>

  </Group>

  </Device>

-----------------------

Here is my php code to read in the xml:

<?php
   // Establish a port 80 connection
   $http = fsockopen("192.168.2.106",80);

   // Send a request to the server
   $req = "GET /xmldata HTTP/1.0\r\n";
   $req .= "Host: 192.168.2.106\r\n";
   $req .= "Connection: Close\r\n\r\n";
   fputs($http, $req);

   // Output the request results
   while(!feof($http)) {
      $data .= fgets($http, 1024);
   }
   // Close the connection
   fclose($http);
  
  $xml = simplexml_load_string($data);

print_r ($xml);

?> 

 

This yields the following data:

SimpleXMLElement Object ( [@attributes] => Array ( [id] => S10011 [hb] => 117546 ) [Group] => Array ( [0] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 1 ) [0] => ) [1] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 2 ) [0] => ) [2] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 3 ) [0] => ) [3] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 4 ) [0] => ) [4] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 5 ) [0] => ) [5] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 6 ) [0] => ) [6] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 7 ) [0] => ) [7] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 8 ) [0] => ) [8] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 9 ) [Probe] => Array ( [0] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 99 ) [Value] => 1.0 ) [1] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 1 ) [Value] => 84.2 ) [2] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 2 ) [Value] => 44.1 ) [3] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 3 ) [Value] => 4.8 ) [4] => SimpleXMLElement Object ( [@attributes] => Array ( [id] => 4 ) [Value] => 1.0 ) ) ) ) )

 

I would like to display group 9 probe 1 value for example and I cannot get it to work.  Any tips?

 

 

[bh]

Yeah, and whats the problem. First use google, and if you stuck than ask a question: simple_xml_tutorial

Anyway, if you know a specific element what you want to get use xpath.

[AbraCadaver]

And the code would be shorter and easier using:

 

$xml = simplexml_load_file('http://192.168.2.106/xmldata');

[spurrdog]

And the code would be shorter and easier using:

 

$xml = simplexml_load_file('http://192.168.2.106/xmldata');

 

AbraCadaver, Thanks for the feedback.  The reason I'm using sockets is the above statement generates this error that I have not been able to resolve.

 

"Warning: simplexml_load_file(http://192.168.2.106/xmldata) [function.simplexml-load-file]: failed to open stream: HTTP request failed! <?xml version="1.0" encoding="ISO-8859-1"?> in C:\xampp\htdocs\xmltest2.php on line 2"  I think it is related to the way this device implements http.

 

Yeah, and whats the problem. First use google, and if you stuck than ask a question: simple_xml_tutorial

Anyway, if you know a specific element what you want to get use xpath.

 

bh, Thank you for your feedback.  I've reviewed and tried many samples / tutorials and applied to this xml with no luck.

 

For example the following xpath code does not yield the <value> for probe 1:

 

<?php
   // Establish a port 80 connection
   $http = fsockopen("192.168.2.106",80);

   // Send a request to the server
   $req = "GET /xmldata HTTP/1.0\r\n";
   $req .= "Host: 192.168.2.106\r\n";
   $req .= "Connection: Close\r\n\r\n";
   fputs($http, $req);

   // Output the request results
   while(!feof($http)) {
      $xmlstr .= fgets($http, 2048);
   }
   // Close the connection
   fclose($http);
  
  
  $xml = simplexml_load_string($xmlstr);

$myValue = $xml->xpath('//Group[@ID="9"]/Probe[@ID="1"]/value'); 
echo $myValue[0];