function checkin_event( $contenu = '' ) {
    global $event_clicked;
    global $register_type;
    if ( is_user_logged_in() ) {
        $fs_current_user = wp_get_current_user();
        $user_value = $fs_current_user->ID;
        $pseudo = $fs_current_user->user_nicename;

        global $wpdb;
        $usercontrol = $wpdb->get_var( $wpdb->prepare("SELECT check_user FROM tw_twunchin WHERE check_event = $event_clicked AND check_user = $user_value"));

        if ( !$usercontrol && !dejaIndecis() && ( get_the_ID() == $event_clicked ) ) {

            $wpdb->query("INSERT INTO tw_twunchin(check_event, check_user, check_type, check_date) VALUES('$event_clicked', '$user_value', '$register_type', NOW())");

            $nombre_participants = $wpdb->get_var( $wpdb->prepare("SELECT COUNT(*) FROM tw_twunchin WHERE check_event = $event_clicked"));

            $wpdb->update( $wpdb->posts, array('inscrits_count' => $nombre_participants), array('ID' => $event_clicked) );

            @wp_mail( get_option('admin_email'), "Twunch checkin - ". html_entity_decode(get_the_title(get_the_ID())). " : ". $nombre_participants." inscrits", "L utilisateur ".$pseudo." (".$user_value.")  est inscrit pour le twunch : ".html_entity_decode(get_the_title(get_the_ID())), $headers);

            $contenu = "<div id='twittos-inscrits' class='coin_6px'>".listeInscrits()."</div>";
            $contenu.= "".listeIndecis()."</div> <!-- END :: Single Twunch -->";