之前做過一個搜尋功能，是直接呼叫PHPcms v9本身的全文搜尋，通過自定義typeid來定義自己所要搜尋的欄目，無意間在網上發現一個自定義catid來搜尋的，感覺十分不錯。

一、 修改phpcms/model/content_model.class.php

//112行附近
$this->search_api($id,$inputinfo); 
修改為：
$this->search_api($id,$systeminfo['catid'],$inputinfo);

//public function search_api這個函式進行修改
    public function
 
 search_api($id = 0,$catid, $data = array(), $action = 'update'){
        $type_arr = getcache('search_model_'.$this->siteid,'search');
        $typeid = $type_arr[$this->modelid]['typeid'];
        if($action == 'update'){
            $fulltext_array = getcache('model_field_'.$this->modelid,'model'
 
);
            foreach($fulltext_array AS $key=>$value){
                if($value['isfulltext']) {
                    $fulltextcontent .= $data['system'][$key] ? $data['system'][$key] : $data['model'][$key];
                }
            }
            $this->search_db->update_search($typeid
 
 ,$id, $fulltextcontent,addslashes($data['system']['title']).' '.addslashes($data['system']['keywords']),$data['system']['inputtime'],'',$catid);
          }elseif($action == 'delete') {
              $this->search_db->delete_search($typeid ,$id);
          }
     }

二、修改phpcms/model/search_model.class.php

//找到update_search方法
public function update_search($typeid,$id = 0 ,$data = '',$text = '',$adddate = 0,$iscreateindex=0,$catid){
        $segment = pc_base::load_sys_class('segment');
        //分詞結果
        $fulltext_data = $segment->get_keyword($segment->split_result($data));
        $fulltext_data = $text.' '.$fulltext_data;
        if(!$iscreateindex){
            $r = $this->get_one(array('typeid'=>$typeid,'id'=>$id),'searchid');
        }

        if($r){
            $searchid = $r['searchid'];
            $this->update(array('data'=>$fulltext_data,'adddate'=>$adddate,'catid'=>$catid),array('typeid'=>$typeid,'id'=>$id));
        }else{
            $siteid = param::get_cookie('siteid');
            $searchid = $this->insert(array('typeid'=>$typeid,'id'=>$id,'adddate'=>$adddate,'data'=>$fulltext_data,'siteid'=>$siteid,'catid'=>$catid),true);

        }
        return $searchid;
    }

三、修改全站更新快取phpcms/modules/content/classes/search_api.class.php

//31行左右
$system_keys = 'id,inputtime,'.implode(',',$system_keys);
//修改為
$system_keys = 'id,inputtime,catid,'.implode(',',$system_keys);

//62行左右
$temp['adddate'] = $r['inputtime'];
//下面增加
$temp['catid'] = $r['catid'];

四、修改phpcms/modules/search/search_admin.php

//86行
$this->db->update_search($typeid ,$id, $r['fulltextcontent'],$r['title'],$r['adddate'], 1,$r['catid']); //這裡增加了$r['catid']

五、修改phpcms/modules/search/index.php

//找到25行左右if(isset($_GET['q']))在下面新增
$catid =$_GET['catid']?" AND catid = '$_GET[catid]'":'';

//找到60行左右
$commend = $this->db->get_one("`typeid` = '$typeid' $sql_time AND `data` like '%$q%'");
//修改為
$commend = $this->db->get_one("`typeid` = '$typeid' $sql_time $catid AND `data` like '%$q%'");

//找到83行左右
if(!empty($segment_q)) {
    $sql = "`siteid`= '$siteid' AND `typeid` = '$typeid' $sql_time AND MATCH (`data`) AGAINST ('$segment_q' IN BOOLEAN MODE)";
    } else {
    $sql = "`siteid`= '$siteid' AND `typeid` = '$typeid' $sql_time AND `data` like '%$q%'";
}
//修改為：
$sql = "`siteid`= '$siteid' AND `typeid` = '$typeid' $catid $sql_time AND `data` like '%$q%'";
//這樣修改可以防止分詞搜尋不到結果的情況

六、修改資料庫_search增加欄位catid int(4)並且做個索引，已經有欄目的資料可以用資料庫查詢程式碼匯入，沒有資料的，後臺提交會自動生成索引

注意：要安裝phpcms的全站搜尋，並且對需要搜尋的欄目新增搜尋分類

前臺呼叫程式碼：

{php $cat_id = 6;}<!--此處是一級欄目id，可以自己設定-->
<form name="search" id="" action="" method="get">
        <li>關 鍵 詞 ：<input name="q" value="請輸入查詢關鍵詞" type="text"  onclick="javascript:document.getElementById('q').value='';" id="q" style="width:150px;"/></li>
        <li>產品類別：<select name="catid" style=" width:150px;">
          <option value="{$cat_id}">所有產品分類</option>
         {loop subcat($cat_id) $v} 
            {php if($v['type']!=0) continue;} 
                 <option value="{$v[catid]}">{$v[catname]}</option>
            {/loop}        
        </select></li>
        <input type="hidden" value="search" name="m">
        <input type="hidden" value="index" name="c">
        <input type="hidden" value="init" name="a">
        <input id="typeid" type="hidden" value="1" name="typeid">
        <input id="siteid" type="hidden" value="1" name="siteid">
        <li><input type="submit" name="submit" id="submit" value=""></li>        
</form>

OK，大功告成！