Function add event

function custom_save_event_meta($post_id) {
    global $wpdb;

        $post = get_post($post_id);
        // Setting up event status
        update_post_meta($post_id, 'incsub_event_status', 'open');

        // Setting up recurring event
        $debut = get_post_meta($post_id, 'event_date_debut', true);
        $debut = explode("+", $debut);
        $debut = $debut[0];

        $fin = get_post_meta($post_id, 'event_date_fin', true);
        $fin = explode("+", $fin);
        $fin = $fin[0];

        $start_time = date("H:i", strtotime($debut));
        $start_date = date("Y-m-d", strtotime($debut));
        $start = strtotime($debut);

        $end_time = date("H:i", strtotime($fin));
        $end_date = date("Y-m-d", strtotime($fin));
        $end = strtotime(date("Y-m-d H:i", $fin));

        // Setting up everything else

        delete_post_meta($post_id, 'incsub_event_start');
        delete_post_meta($post_id, 'incsub_event_no_start');
        delete_post_meta($post_id, 'incsub_event_end');
        delete_post_meta($post_id, 'incsub_event_no_end');
        $dates = strtotime(date("Y-m", strtotime($debut)));
        $datef = strtotime(date("Y-m", strtotime($debut)) . " +1 month");

        add_post_meta($post_id, 'eab_event_recurring', '');

        add_post_meta($post_id, 'eab_event_recurrence_starts', $dates);
        add_post_meta($post_id, 'eab_event_recurrence_ends', $datef);

        add_post_meta($post_id, 'incsub_event_start', $start_date . " " . $start_time);

        add_post_meta($post_id, 'incsub_event_end', $end_date . " " . $end_time);

}

add_action('save_post', 'custom_save_event_meta');