Drupal 7 node_load references

// Load up the node with files on it.

$node = node_load(1);

 

// Render the node.

$rendered = node_view($node);

 

// Later, decide you want a 'fresh' copy of the node.

$fresh_node = node_load(1);

 

// Save the fresh node.

node_save($fresh_node);

Now go and edit your file in Drupal, where has your uploaded file gone?
Well, the call to node_view means that file.module directly unsets the files that shouldn't be displayed. But, in my code, this node is effectively global, so when I call my second node load, it's not 'fresh' at all, I just get back a reference to the node that's had the file removed, so calling node_save on it was a very bad idea.

$query = new EntityFieldQuery;
$result = $query
  ->entityCondition('entity_type', 'node')
  ->propertyCondition('type', 'mytype')
  ->propertyCondition('title', $text)
  ->execute();

if (!empty($result['node'])) {
  $nodes = node_load_multiple(array_keys($result['node']));
  echo current($nodes)->body['und'][0]['safe_value'];
}
 $nid = $rs->nid;
  $node = node_load($nid);
 <?php print $node->body['und'][0]['value'];?>