PHP搜索页面怎么实现分类检索

echo join(' - ', $_GET), '<br>';<br />
$dict = array(<br />
  'area' => array('内地', '港台'),<br />
  'type' => array('动作', '爱情'),<br />
  'year' => array('2001', '2013'),<br />
);<br />
foreach($dict as $key=>$item) {<br />
  $param = $_GET;<br />
  foreach($item as $v) {<br />
    $param[$key] = $v;<br />
    $t = http_build_query($param);<br />
    echo "<a href='/search.php?$t'>$v</a> ";<br />
  }<br />
  echo '<br>';<br />
}<br />

<?php<br />
session_start();<br />
if(! isset($_SESSION['search']))<br />
   $_SESSION['search'] = array();<br />
$_SESSION['search'] = array_merge($_SESSION['search'], $_GET);<br />
echo join(' - ', $_SESSION['search']), '<br>';<br />
?><br />
<a href="/search1.php?area=内地">内地</a><br />
<a href="/search1.php?type=动作">动作</a><br />
<a href="/search1.php?year=2011">2011</a><br />

session_start();<br>
if(! isset($_SESSION['search']) <br><font color="#FF8000">------解决方案--------------------</font><br> ! $_GET)<br>
   $_SESSION['search'] = array();<br>
$_SESSION['search'] = array_merge($_SESSION['search'], $_GET); <div class="clear">
                 
              
              
        
            </div>