Breadcrumb in Codeigniter

<h2><?=preg_replace('/[^a-zA-Z0-9]+/', ' ', $this->uri->segment($this->uri->total_segments()));?></h2>
    <ol class="breadcrumb">
      <li> <a href="<?php echo base_url().'Admin/Dashboard'?>">Dashboard</a> </li>
      <?php for($i=2; $i<=$this->uri->total_segments(); $i++){ $c=$i==$this->uri->total_segments() ? "active" : ""?>
      <li class="<?=$c?>"> <?php if($i==$this->uri->total_segments()){?><strong><?php }?><?=preg_replace('/[^a-zA-Z0-9]+/', ' ', $this->uri->segment($i));?><?php if($i==$this->uri->total_segments()){ ?></strong><?php } ?> </li>
 <?php }?>
    </ol>