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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