Wordpress实现文章支持和反对功能的方法

public function dolike_unlike(){
$b = M();
$input = new input();
$id = $input->post('id');//过滤提交的信息。防止sql注入，之前发的代码我都补上了。
//$id = 5524;
$val = $_POST['data'];
if($val==1){
$b->query("update `wp_posts` set `like` =`like`+1 WHERE id = $id");//点击like的更新
}else if($val==0){
$b->query("update `wp_posts` set `unlike` =`unlike`+1 WHERE id = $id"); //dislike更新
}else{
$this->error('error');
}
$list = $b->query("SELECT `like`,`unlike` FROM `wp_posts` WHERE id = $id");//获取数据
$like = $list[0]['like'];
$dislike = $list[0]['unlike'];
if($like!=0 || $dislike!=0){//计算
$elike = $like/($like+$dislike);
$elike = substr($elike*100,0,4);
$edislike = $dislike/($like+$dislike);
$edislike = substr($edislike*100,0,4);
}
//echo $elike;
$output = array(//组合函数待输出
likenum=>$like,
dislikenum=>$dislike,
like=>$elike,
dislike=>$edislike
);
//echo $list;
//dump($output);
$this->ajaxReturn($output,'success',1);//输出
//echo 'ok';
//$this->display('');
}

<div class="cl"></div>
<style>
.recomm{ border-bottom:4px solid #FF7523; color:#FF7523}
.single_share_class{ position:absolute; left:-95px; top:80px; width:75px; height:328px; text-align:center; background:url(/img/single_page_share.png) no-repeat;}
.single_share_class .comm_num{ padding:12px 0 48px 0px}
.single_share_class .comm_num span{ font-size:10px; line-height:11px; color:#ff9853; display:block}
.single_share_class >span >span >span{ margin-bottom:7px !important;}
.single_share_class .copylink{ padding:28px 0 0 0; cursor:pointer}
.single_share_class .st_sharethis_large >span >span{ background:none !important}
.dingandcai{ width:526px; height:62px; background:url(/img/likeandunlike.jpg) no-repeat; margin:20px 0;line-height:62px; text-align:center; font-size:24px; text-shadow:1px 1px 1px #000; }
.dingandcai .left_like{ width:224px; float:left;height:62px; position:relative}
.dingandcai .left_like span,.dingandcai .right_unlike span{ position:relative; z-index:2}
.dingandcai .dingload{ width:78px; float:left; }
.dingandcai .right_unlike{ width:224px; float:left; height:62px;position:relative }
.dingandcai .left_like .left_con{ background:url(/img/likeandunlike.jpg) 0px -63px no-repeat; width:50%; height:62px;position:absolute;top:0;left:0; z-index:1}
.dingandcai .right_unlike .right_con{ background:url(/img/likeandunlike.jpg) -302px -63px no-repeat; width:50%; height:62px;position:absolute;top:0;left:0; z-index:1}
.allow_click,.disallow_click{cursor:pointer}
</style>
<div class="dingandcai">
<div class="left_like" val="1" postid="<?php the_ID(); ?>">
<div class="left_con"></div><span id="like">Like</span>
</div>
<div class="dingload">
<img src="/img/loading_sm.gif" />&nbsp;
</div>
<div class="right_unlike" val="0" postid="<?php the_ID(); ?>">
<div class="right_con"></div>
<span id="dislike">Dislike</span>
</div>
</div>
<div class="cl"></div>

jQuery(".dingload img").ajaxStart(function(){//ajax提示
jQuery(this).show();
});
jQuery(".dingload img").ajaxStop(function(){
jQuery(this).hide();
});
var pid = jQuery(".left_like").attr("postid");
var likecookie = jQuery.cookie("like"+pid);
if(likecookie!=pid){//判断是否点击过，如果没有点击则
jQuery(".left_like,.right_unlike").addClass("allow_click");
jQuery.get('/cityosweb/default.php/Shanmao/wplike_unlike',{id:pid},function(data){
if(data.status==1){//显示背景百分比和like dislike字样
jQuery(".left_like .left_con").css("width",data.data.like+"%");
jQuery(".right_unlike .right_con").css("width",data.data.dislike+"%");
}
},"json");
}else{//如果已经投过票了则
jQuery(".left_like,.right_unlike").addClass("disallow_click");
jQuery.get('/cityosweb/default.php/Shanmao/wplike_unlike',{id:pid},function(data){
if(data.status==1){//显示背景百分比和投票数
//alert(data.likenum);
jQuery("#like").html(data.data.likenum);
jQuery("#dislike").html(data.data.dislikenum);
jQuery(".left_like .left_con").css("width",data.data.like+"%");
jQuery(".right_unlike .right_con").css("width",data.data.dislike+"%");
}
},"json");
}
jQuery(".left_like,.right_unlike").click(function(){
if(jQuery(this).hasClass("allow_click")){//如果有这个class才提交
var val = jQuery(this).attr("val");
var postid = jQuery(this).attr("postid");
jQuery.post('/cityosweb/default.php/Shanmao/dolike_unlike',{data:val,id:postid},function(data){//点击的时候
if(data.status==1){//成功返回处理
jQuery("#like").html(data.data.likenum);
jQuery("#dislike").html(data.data.dislikenum);
jQuery(".left_like .left_con").css("width",data.data.like+"%");
jQuery(".right_unlike .right_con").css("width",data.data.dislike+"%");
jQuery(".left_like,.right_unlike").removeClass("allow_click").addClass("disallow_click");
jQuery.cookie('like'+postid,postid,{expires: 1});//提交后写入cookie，这里是用juqery.cookie插件。保存一天时间，每篇文章保存不一样的id。值随意，只要你上面好做判断。
}else{
alert(data.info);
}
},"json");
}
});
jQuery(".disallow_click").live("click",function(){//不允许提交时候弹出
alert("Your vote has already been submitted!");
});