How to force function to run as the last one when saving the post?

I don’t know how to force this function to run as the last function after all other save things from WP are executed.

This is my current code in my plugin:

add_action( 'save_post', 'do_custom_save' ); 
function do_custom_save( $post_id ) { 


    // No auto saves 
    if( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) return; 

    // make sure the current user can edit the post 
    if( ! current_user_can( 'edit_post' ) ) return;

    // assure the post type
    if ( ! get_post_type($post_id) == 'post' ) return;


    $latitude  = $_POST['rw_company_latitude'];
    $longitude = $_POST['rw_company_longitude'];
    $zoom      = '6';

    $lat_lon_zoom = $latitude . ', ' . $longitude . ', ' . $zoom ;

    update_post_meta($post_id, 'company_map', $lat_lon_zoom );


}

How to force this code to be executed and saved the mixed variable as the last thing? After all the other saving and updating is done.

Because right now it’s updated ok, but then again rewritten by the value from original map field $_POST[‘company_map’]. I need to somehow tell WP that this function should run as the last function when performing saving/updating post stuff.

How to do that?

add_action has a priority parameter which is 10 by default, you can increase that to load your function late.

Change add_action( 'save_post', 'do_custom_save' );

to

add_action( 'save_post', 'do_custom_save', 100 );

Now the priority is to set to 100 and will load quite late and will allow other function associated to load before this function is executed.

For more details check the function reference for add_action.