I had recently found the need to manually reindex the Search API indexes programmatically after performing some other operation. The code snippet below will do just that for you :)

// Load Search API Index.<br>$search_api_index = search_api_index_load('SEARCH_API_INDEX_NAME');<br>// Clear the index.<br>$search_api_index-&gt;clear();<br>// Run!<br>search_api_index_items($search_api_index, -1);

Refer to Search API documentation here:http://drupalcontrib.org/api/drupal/contributions!search_api!search_api....

By the way, this was tested working with Search API 7.x-1.6.

Hope this helps somebody out there!

Tags: drupaldrupal 7searchsearch_apireindexapiprogrammatically