echo '<li class="collection-item">'.bb($a['text']).'<br/><br/>';
if(isset($user)) {
    echo ($db->query("SELECT * FROM `save_article` WHERE `id_user` = '$user[id]' AND `id_article` = '$a[id]'") -> num_rows != true?'
    <form action="" method="POST">
    <div class="center-align">
    <button class="btn waves-effect waves-light blue" type="submit" name="in">Сохранить в закладки<i class="material-icons right">done</i></button>
    </div>
    </form>':'').' </li>';