function node_last_viewed in Drupal 7

Same name and namespace in other branches

1. 4 modules/node.module \node_last_viewed()
2. 5 modules/node/node.module \node_last_viewed()
3. 6 modules/node/node.module \node_last_viewed()

Retrieves the timestamp for the current user's last view of a specified node.

Parameters

$nid: A node ID.

Return value

If a node has been previously viewed by the user, the timestamp in seconds of when the last view occurred; otherwise, zero.

2 calls to node_last_viewed()

comment_num_new in modules/comment/comment.module

Get number of new comments for current user and specified node.

node_mark in modules/node/node.module

Determines the type of marker to be displayed for a given node.

File

modules/node/node.module, line 328

The core that allows content to be submitted to the site. Modules and scripts may programmatically submit nodes using the usual form API pattern.

Code

function node_last_viewed($nid) {
  global $user;
  $history =& drupal_static(__FUNCTION__, array());
  if (!isset($history[$nid])) {
    $history[$nid] = db_query("SELECT timestamp FROM {history} WHERE uid = :uid AND nid = :nid", array(
      ':uid' => $user->uid,
      ':nid' => $nid,
    ))
      ->fetchObject();
  }
  return isset($history[$nid]->timestamp) ? $history[$nid]->timestamp : 0;
}