if ($page < 0){
  	echo "1";
  }elseif ($page > $pages){
  	echo "$pages";
  }

<a href="?halaman=1">&laquo;</a>
                    <a href="?halaman=<?php echo $page-1 ?>">&lt;</a>
                  <?php for ($i=1; $i<=$pages ; $i++){ ?>
  <a href="?halaman=<?php echo $i; ?>"><?php echo $i; ?></a>
  <?php } ?>
  <a href="?halaman=<?php echo $page+1;?>">&gt;</a>
  <a href="?halaman=<?php echo $pages; ?>">&raquo;</a>