<div class="col-sm-12 col-md-9">
<div class="row">
<div class="col-sm-12">
<div class="panel">
<div class="panel-body">
<form method="post">
<div class="col-sm-12 form-group">
<textarea placeholder="Vai dizer o que?" class="form-control" name="comentario" required></textarea>
</div>
<div class="col-sm-12 form-group">
<button type="submit" class="btn btn-primary pull-right">Publicar</button>
</div>
</form>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-sm-12">
<?php
$comentario->getTodosComentarios();
?>
</div>
</div>
</div>
</div>
</div>
</body>
</html>
