PHP - Ayuda, Confirmar antes de eliminar regsitro

<?php

$printer = printerData::getById($_GET["id"]);

$printer->del();

Core::redir("./index.php?view=printer");

?>

public function del(){

	$sql = "delete from ".self::$tablename." where id=$this->id";

	Executor::doit($sql);

}

<div class="row">

	<div class="col-md-6">

<div class="btn-group pull-right">

	<a href="index.php?view=newprinter" class="btn btn-default"><i class='fa fa-th-list'></i> Nuevo Regsitro</a>

</div>

		<h1>Impresoras</h1>

<br>

		<?php

		$users = ImpresorasData::getAll();

		if(count($users)>0){

			// si hay usuarios

			?>

<table class="table table-bordered table-hover">

			<thead>

			<th>Nombre completo</th>

			<th></th>

			</thead>

			<?php

			foreach($users as $user){

				?>

				<tr>

				<td><?php echo $user->name." ".$user->lastname; ?></td>

				<td style="width:130px;">

				<a href="index.php?view=editimpresoras&id=<?php echo $user->id;?>" class="btn btn-warning btn-xs">Editar</a>

				<a href="index.php?view=delfimpresoras&id=<?php echo $user->id;?>" class="btn btn-danger btn-xs">Eliminar</a>

				</td>

				</tr>

				<?php

			}

		}else{

			echo "<p class='alert alert-danger'>No hay registros</p>";

		}

		?>

	</div>

</div>

<a href="index.php?view=delfimpresoras&id=<?php echo $user->id;?>" class="btn btn-danger btn-xs">Eliminar</a>

<a onclick="eliminar(this.href); return false;" href="index.php?view=delfimpresoras&id=<?php echo $user->id;?>" class="btn btn-danger btn-xs">Eliminar</a>

<script>

     function eliminar(url){

        if(confirm('¿Deseas eliminar el registro?')){

             window.location.href = url;

        }

     }

</script>