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I have fragment caching implemented in a page. I've got the codes from https://css-tricks.com/wordpress-fragment-caching-revisited/.

Which goes like this:

    function fragment_cache($key, $ttl, $function) {
      if ( is_user_logged_in() ) {
        call_user_func($function);
        return;
      }
      $key = apply_filters('fragment_cache_prefix','fragment_cache_').$key;
      $output = get_transient($key);
      if ( empty($output) ) {
        ob_start();
        call_user_func($function);
        $output = ob_get_clean();
        set_transient($key, $output, $ttl);
      }
      echo $output;
    } 

And I want to clear the transient set when a post is added. How can i do that?

  • because i have this taxonomy.php that loads all the post under it. The looping was within the fragment cache. I just thought that if i add new post under that taxonomy, it won't show the new post because the time has not yet elapse. Is that how it works right? or i am mistaken? @N00b Help me – karlo jay bueno Feb 19 '16 at 14:36
  • you need to implement save_post and delete_post hooks IMO. – knif3r Jul 6 '16 at 9:37
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Add the below code in your active theme's functions.php file.

function wpse_delete_query_transient( $post ) { // Deletes the transient when a new post is published delete_transient( 'd_results' ); } add_action( 'new_to_publish', 'wpse_delete_query_transient' );

This will delete the transient every time when a new post is published.

If you want to delete the transients on differrent post status transitions, you may refer codex

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