php 实现收藏功能的示例代码


            整理文档，搜刮出一个php 实现收藏功能的示例代码，稍微整理精简一下做下分享。

HTML:





<a class = "x" id="{$photo.id}" uid="{$Think.session.uid}" status = "{$collect_pic}" href = "javascript:void(0);">

<if condition = "$collect_num gt 0">

  <span>取消收藏</span>

<else/><span>收藏</span></if></a>



Js:





//点击收藏，实现已收藏

  $('.x').on('click',function(){

    var Oa=$(this);

    var id=Oa.attr('id');//获取图片id属性

    var uid = Oa.attr('uid');//获取用户id

    var status = Oa.attr('status'); //获取收藏状态 1收藏，0取消收藏

    $.post('url',{id:id,uid:uid,status:status},function(msg){

      if(msg.status==1){

        Oa.find("span").text('取消收藏');

        Oa.attr('status','1');

      }else{

        Oa.find("span").text('收藏');

        Oa.attr('status','0');

      }

    },'json')

  })







PHP:





//判断用户是否已收藏该图片

      $data['uid'] = $_SESSION['uid'];

      $data['pid'] = $pid;

      $collect_pic = M('collect')->where($data)->getfield('status');

      $this->collect_num = $collect_num;

      $this->collect_pic = $collect_pic;



//收藏成功

    public function cang(){



      $data['pid'] = isset($_POST['id'])?intval(trim($_POST['id'])):0;

      $data['uid'] = $_SESSION['uid'];

      //默认o收藏 1取消收藏

      $status = isset($_POST['status'])?intval(trim($_POST['status'])):0;

      $db = M('collect');

      if($status == 0){

        //数据组装，忽略

        if(M('collect')->data($collect)->add()){

          $msg['info'] = "ok";

          $msg['status'] = 1;

          $this->ajaxreturn($msg);

          exit;        

        }else{

          $msg['info'] = 'fail';

          $msg['status'] = 1;

          $this->ajaxreturn($msg);

        }

      }else{

        //取消收藏

        if($db->where($data)->delete()){

          $msg['info'] = "ok";

          $msg['status'] = 0;

          $this->ajaxreturn($msg);

          exit;

        }else{

          $msg['info'] = 'fail';

          $msg['status'] = 0;

          $this->ajaxreturn($msg);

        }

      }







思路：基本没什么难度，注意细节即可。

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