Drupal 7 - Get breadcrumb by node id.

gistfile1.php

<?php

function _get_breadcrumb_by_nid($nid) {
  $node = node_load($nid);

  // If a node is not found, return.
  if (!$node) {
    return;
  }

  // Load the node into a context.
  ctools_include('context');
  ctools_include('context-task-handler');

  // Load the node_view task and contexts.
  $task = page_manager_get_task('node_view');
  $contexts = ctools_context_handler_get_task_contexts($task, '', array($node));

  // Find a handler for this task
  $handlers = page_manager_load_sorted_handlers($task, '', TRUE);
  $id = ctools_context_handler_get_render_handler($task, $subtask, $handlers, $contexts, $args);
  if ($id) {
    $handler = $handlers[$id];
    $conf = $handler->conf;

    // If panels_breadcrumbs isn't enabled for this display, bail out.
    if (!isset($conf['panels_breadcrumbs_state']) || !$conf['panels_breadcrumbs_state']) {
      return;
    }

    // If no titles or paths are defined, also bail out.
    if (!isset($conf['panels_breadcrumbs_titles']) || !isset($conf['panels_breadcrumbs_paths'])) {
      return;
    }

    $display_context = ctools_context_handler_get_handler_contexts($contexts, $handler); //$handler->conf['display']->context;

    // Look for Placeholder Tokens in Titles and Paths and Convert them for this Display
    $titles = ctools_context_keyword_substitute($conf['panels_breadcrumbs_titles'], array(), $display_context);
    $paths = ctools_context_keyword_substitute($conf['panels_breadcrumbs_paths'], array(), $display_context);

    // Breaks titles and paths into arrays and removes empty keys.
    $titles = array_filter(array_map('trim', explode(PHP_EOL, $titles)), 'strlen');
    $paths = array_filter(array_map('trim', explode(PHP_EOL, $paths)), 'strlen');

    $default = array(
      'title' => '',
      'href' => '',
      'localized_options' => array(),
    );

    $breadcrumbs_info = array();

    if (!isset($conf['panels_breadcrumbs_home']) || $conf['panels_breadcrumbs_home'] == TRUE) {
      // Sets the First Crumb to Home
      $breadcrumbs_info[] = array('title' => t('Home'), 'href' => '<front>') + $default;
    }

    // Iterate through all titles and add them to the breadcrumb
    foreach ($titles as $key => $title) {
      $title = html_entity_decode(trim($title));
      $path = empty($paths[$key]) ? '<none>' : trim($paths[$key]);
      $breadcrumbs_info[] = array('title' => t($title), 'href' => $path) + $default;
    }

    // Allow other modules to intercept and change the breadcrumb
    drupal_alter('menu_breadcrumb', $breadcrumbs_info, end($breadcrumbs_info));

    $breadcrumbs = array();

    foreach ($breadcrumbs_info as $crumb) {
      if (isset($crumb['href']) && $crumb['href'] == '<none>') {
        $crumb['localized_options'] += array('attributes' => array(), 'html' => true);
        $breadcrumbs[] = '<span ' . drupal_attributes($crumb['localized_options']['attributes']) . '>' . ($crumb['localized_options']['html'] ? $crumb['title'] : check_plain($crumb['title'])) . '</span>';
      } else {
        $breadcrumbs[] = l($crumb['title'], $crumb['href'], $crumb['localized_options']);
      }
    }
  }

  return $breadcrumbs;
}