本篇文章给大家介绍一下用php实现文章分类的方法。有一定的参考价值，有需要的朋友可以参考一下，希望对大家有所帮助。
文章分类：同一个新闻 属于 多个菜单项 。比如某新闻既属于校园新闻又属于机构设置，那么点开校园新闻菜单项可以看到这篇文章，点开机构设置也可以看到这篇文章。
两个数据库 type放菜单项 每个菜单项的id唯一。dynamics放文章，文章的tag可以是多个type中的id
public function column($p=1){
$school_dynamicsModel = D('school_dynamics');
$school_typeModel =D('school_type');
$photoModel =D('photo');
$pid = isset($_REQUEST['pid']) ? $_REQUEST['pid'] : false;
$p = intval($p) > 0 ? $p : 1;
$pagesize = 20;
$offset = $pagesize * ($p - 1);
$count = $school_dynamicsModel->where("tag like '%' '$pid' '%' and is_delete = 0")->count();
$list_school = $school_dynamicsModel->where("tag like '%' '$pid' '%' and is_delete = 0")->order('time desc ')->limit($offset . ',' . $pagesize)->select();
$list = array();
foreach ($list_school as $p) {
if ($p['release_date']) {
$p['time'] = $p['release_date'];
}
else {
$p['time'] = date('Y-m-d H:i:s', $p['time']);
}
$list[] = $p;
}
$this->assign('list',$list);
$this->assign('page', $page);
$this->display();
}
然后在页面上循环输出
<p> </p>
{$page}
当你点击页面上的修改或者新增或者修改时，input把tag中的对应的菜单项读出来
public function edit($aid = 0){
$aid = intval($aid);
$school_dynamicsModel = D('school_dynamics');
$item = $school_dynamicsModel->where("id='$aid'")->find();
$conditions=$item['tag'];
$character_string=explode(',',$conditions);
for($cycle=0;$cycle<count>where("id ='$character_string[$cycle]'")->find();
$recordtag[]=$record['title'];
}
$tag=implode(',',$recordtag);
$item['tag']= $tag;
if (!$item) {
$this->error('参数错误！');
}
$option = M('school_type')->order('sort ASC')->select();
$option = $this->getMenu($option);
$this->assign('option', $option);
$this->assign('tag', $tag);
$this->assign('item', $item);
$this->display('form');
}
public function update(){
$id = isset($_REQUEST['id']) ? $_REQUEST['id'] : false;
$data['tag'] = $_POST['titietag'];
$tag_str = $data['tag'];
$array_tag = explode(',',$tag_str);
for ($cyclic_variable = 0; $cyclic_variable where("title='$array_tag[$cyclic_variable]'")->find();
$record_id[] = $result['id'];
}
$char = implode(',', $record_id);
$data['tag'] = $char;
if ($id) {
D('school_dynamics')->data($data)->where('id=' . $id)->save();
addlog('编辑内容，ID：' . $id);
$this->success('恭喜！内容编辑成功！', U('/qwadmin/homepage/index'));
} else {
$result = D('school_dynamics')->data($data)->add();
if ($result) {
addlog('新增内容，ID：' . $result['id']);
$this->success('恭喜！内容新增成功！', U('/qwadmin/homepage/index'));
} else {
$this->error('抱歉，未知错误！');
}
}
}</count>
网页代码
<div>
<label>
文章类目： </label>
<div>
<select>
<volist>
<option>{$v['title']}</option>
<volist>
<option>{$vv['title']}</option>
</volist>
</volist>
</select>
<span>
<span>
<input>
</span>
</span>
</div>
</div>
<script>
function toTag() {
var originally_input=$("#titletag").val();
$("#titletag").val("");
var add_new=$("#xinzen option:selected").text();
if (originally_input.indexOf(add_new, 0) == -1) {
if(originally_input==''){
originally_input = add_new;
}else{
originally_input += ',' + add_new;
}
$("#titletag").val(originally_input);
} else {
$("#titletag").val(originally_input);
}
}
</script>
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