Object to XML changing the names of the nodes

I have the object in php like this:

object(stdClass)[16]
  public 'L1' => 
    object(stdClass)[17]
      public 'int' => 
        array (size=2)
          0 => int 1
          1 => int 2
  public 'L2' => string '52' (length=2)
  public 'R' => string '2' (length=1)

Which i can convert to XML and i get:

<data>
 <L1>
   <int>
     <node>1</node>
     <node>2</node>
   </int>
 </L1>
 <L2>52</L2>
 <R>2</R>
</data>

The problem is that i want to get rid of the names of the nodes and the node . In the final i want my XML to look like this:

<data>
 <param1>1</param1>
 <param2>2</param2>
 <param3>52</param3>
 <param4>2</param4>
</data>

Can anyone suggest the way i can do it ?

Thank you in advance.