You have to check the existing rewrite rules before you run a flush. If your feed name is test, they are stored under the keys ‘feed/(feed|rdf|rss|rss2|atom|test)/?$’ and ‘(feed|rdf|rss|rss2|atom|test)/?$’. So this should do the trick: add_action( ‘init’, function() { $name=”test”; $registered = FALSE; add_feed( $name, ‘test_feed’ ); $rules = get_option( ‘rewrite_rules’ ); $feeds = array_keys( $rules, … Read more
I just ran a test where I uploaded an image to media library, then renamed my root index.php file to break WordPress, but the image I uploaded was still available by accessing it directly with its wp-content/uploads/… URL. There are no .htaccess files in wp-content or uploads either, which means that, barring any plugins that … Read more
set_query_var doesn’t seem to work on init hook
You can add the action on the init itself, just increase the priority of the add_action call. The higher the priority the later the function is called. add_action(‘init’, ‘retrieve_my_terms’, 9999); But my suggestion is that you should do these kind of things as late as possible, preferably just before the first time they are used. … Read more
There’s a filter for that: function wpse_alter_title( $title, $id ) { // $id = $post->ID; // alter the title here return $title; } If you want to alter the “Protected” and “Private” titles, then you need other filters: // Preserve the “%s” – else the title will be removed. function wpse_alter_protected_title_format( $title ) { return … Read more
When you register post type it is stored in a global var name $wp_post_types and the taxonomies are stored in a global var named $wp_taxonomies Its all in the memory since you need it all and if it was stored in the database you would need to pull it from the database and then it … Read more
From Codex Action Reference: init Runs after WordPress has finished loading but before any headers are sent. Useful for intercepting $_GET or $_POST triggers. wp_head Runs when the template calls the wp_head function. This hook is generally placed near the top of a page template between <head> and </head>. This hook does not take any … Read more
If I understand your question, the race condition you describe between WordPress knowing the transaction was “complete” and the user returning to your site is the problem. Regarding a potential solution, what about changing the way you’re approaching this such that this race condition is accepted as a real possibility rather than something that you … Read more
You can combine add_action() and an is_admin() check: ! is_admin() and add_action( ‘init’, ‘my_custom_callback’ ); Now the callback function will run on front-end only.
In general: Yes, wait for a dedicated hook to start your own code. Never just throw an object instance into the global namespace. But init is rarely necessary. You hook in as late as possible. If your first code runs on wp_head do not use an earlier hook. You can even cascade hooks: add_action( ‘wp_head’, … Read more