Hook after all metadata are set is triggering several time

I need to trigger a function everytime the user save the post manually (so only thanks to the “Update button”).

Here’s what I have :

add_action( 'save_post', 'my_save_post_function', 10, 3 ); function my_save_post_function($object_id, $post, $updated)  { $post = get_post($object_id); $post_ID = $object_id; if(!wp_doing_ajax() && count($_REQUEST) > 2){ if($post->post_type == "incsub_event" && $_POST["action"] = "editpost") { /* do stuff*/ } } 

Problem : this function is trigger twice (I can see that thanks to my code in do stuff, everything is dupplicated).

Seems like the first time is triggered when the user click on the link, and the second time (maybe ?) after the metadata are updated.

How can I trigger this only once ?

PS : tried with hook “post_updated” (doesn’t update my metadata) and “update_post_metadata” (triggers twice too)