CKfinder integrated into CKeditor PHP

Now that the new 3.1 version of CKeditor came out I was quick to test it out. Works great and there's some nice added features like the PHP support. Now I can create the ckeditor instance through PHP alone as follows: (from sample code)

// Create class instance.
$CKEditor = new CKEditor();

// Do not print the code directly to the browser, return it instead
//$CKEditor->returnOutput = true;

// Path to CKEditor directory, ideally instead of relative dir, use an absolute path:
$CKEditor->basePath = '/ckeditor/';

// Set global configuration (will be used by all instances of CKEditor).
//$CKEditor->config['width'] = 600;

// Change default textarea attributes
$CKEditor->textareaAttributes = array("cols" => 80, "rows" => 10);
//$CKEditor->config['height'] = 300;
//$CKEditor->config['uiColor']  = '#0080FF';


// The initial value to be displayed in the editor.
$initialValue = html_entity_decode(stripslashes($body));

$CKEditor->config['customConfig'] = '/ckeditor/custom/configProjectEdits.js';
echo "replacing $body_id<br>";
$CKEditor->replace("$body_id");

// Create first instance.
//$code = $CKEditor->editor($body_id, $initialValue);

The problem is that I don't know how to integrate ckfinder into this php instance now. I've only been able to do that with javascript as follows:

<script type="text/javascript">
   var editor = CKEDITOR.replace( '<?php echo $body_id; ?>' );
   CKFinder.SetupCKEditor( editor ) ;
</script>

It's easy with javascript, but how do I integrate using the PHP version of ckeditor?