php+mysql+ajax点赞和踩的功能

嫌麻烦的也可以：点击下载

HTML:

<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><script src="common/js/jquery.js" type="text/javascript"></script><script language="JavaScript" type="text/javascript">jQuery(function($) {	//这两个是鼠标放上去的效果	$(".zhan").hover(function(){ 		$(this).children("b").toggle();	}); 	$(".cai").hover(function(){	 	$(this).children("b").toggle();	});  }); </script><script type="text/javascript"> <!--这两个点击事件可以改进的，因为事件问题，所以就弄了两个点击事件  $(document).ready(function(e) {	//点赞（给力）	$('.zhan').click(function(){	var zhan=$(this);	var left = parseInt($(this).offset().left)+10, top =  parseInt($(this).offset().top)-10, obj=$(this);	$(this).append('<div id="zhan"><b>+1<\/b></\div>');	$('#zhan').css({'position':'absolute','z-index':'1', 'color':'#C30','left':left+'px','top':top+'px'}).animate({top:top-10,left:left+10},'slow',function(){	$(this).fadeIn('fast').remove();	var Num = parseInt(obj.find('span').text());	Num++;	obj.find('span').text(Num);	});$.ajax({  	url:"ajax.php?action=zan",  	type:"post",  	data:"answer_id="+$(this).attr("alt"),  	success:function(datas){  		zhan.unbind('click');  		zhan.parent().parent().siblings().children().children().unbind('click');		zhan.parent().parent().siblings().children().children().attr("class","evaluate-inner");  		zhan.attr("class","evaluate-inner"); 	}  }); }); //踩（不给力） $('.cai').click(function(){	var cai=$(this);	var left = parseInt($(this).offset().left)+10, top =  parseInt($(this).offset().top)-10, obj=$(this);	$(this).append('<div id="cai"><b>-1<\/b></\div>');	$('#cai').css({'position':'absolute','z-index':'1', 'color':'#7DAAD5','left':left+'px','top':top+'px'}).animate({top:top-10,left:left+10},'slow',function(){	$(this).fadeIn('fast').remove();	var Num = parseInt(obj.find('span').text());	Num--;	obj.find('span').text(Num);	}); $.ajax({  	url:"ajax.php?action=cai",  	type:"post",  	data:"answer_id="+$(this).attr("alt"),  	success:function(datas){  		cai.unbind('click');  		cai.parent().parent().siblings().children().children().unbind('click');		cai.parent().parent().siblings().children().children().attr("class","evaluate-inner");  		cai.attr("class","evaluate-inner"); 	}  }); }); }); //--></script><!--给力开始--><span data-evaluate="0" id="evaluate-1908165795" class="evaluate" alog-action="qb-zan-btn"> <span class="evaluate-outer"><!-----判断对应的回答的id是否在自己创建的存储赞和踩数据的php文件，如果赞或者踩存在一个的话就不能再单击----><span class="evaluate-inner {OVOV:if $answer_datas.ans_id|in_array:$zan_list or $answer_datas.ans_id|in_array:$cai_list/}{OVOV:else/}zhan{OVOV:/if/}" alt="{OVOV:$answer_datas.ans_id/}"> <b style="display:none" class="evaluate-tip evaluate-num-fixed">给力</b> <b class="evaluate-num evaluate-num-fixed"><span>{OVOV:$answer_datas.goods/}</span></b> </span> </span> </span><!--不给力开始--><span data-evaluate="0" id="evaluate-bad-1908165795" class="evaluate evaluate-bad" alog-action="qb-evaluate-outer"> <span class="evaluate-outer"> <span class="evaluate-inner {OVOV:if $answer_datas.ans_id|in_array:$zan_list or $answer_datas.ans_id|in_array:$cai_list/}{OVOV:else/}cai{OVOV:/if/}" alt="{OVOV:$answer_datas.ans_id/}"> <b style="display: none;" class="evaluate-tip evaluate-num-fixed">不给力</b> <b class="evaluate-num evaluate-num-fixed" style="display: inline-block;"><span>{OVOV:$answer_datas.bads/}</span></b> </span> </span> </span><!--评论回答开始-->

HTML对应的php文件

<?php $action=$_GET['action'];//获取get方式传过来的actionrequire_once("array/ovovsys_zan.php");switch($action){	case 'detail':		/*****赞开始****/		$zan_list = json_decode(str_replace("'",'"',$zan_json),true);		$zan_lists=array();		foreach($zan_list as $key=>$value){			if($value['uid']==$uid){		 		$zan_lists[]=$value['answer_id'];			}		} 		$smarty->assign('zan_list',$zan_lists);//查询当前登录的会员的uid对应的点赞的回答 		/*****赞结束****/ 		/*****踩开始****/		$cai_list = json_decode(str_replace("'",'"',$cai_json),true);		$cai_lists=array();		foreach($cai_list as $key=>$value){			if($value['uid']==$uid){		 		$cai_lists[]=$value['answer_id'];			}		} 		$smarty->assign('cai_list',$cai_lists);//查询当前登录的会员的uid对应的踩的回答 		/*****踩结束****/		$smarty->display('自己的静态页面');		exit();	break;}?>

ajax文件：

<?php require_once("array/ovovsys_zan.php");//这里引用array文件夹中的数组文件$action=trim($_GET['action']);if(empty($action)){	echo '<font color=red>参数错误！';exit();}switch($action){	 case 'zan'://点赞（给力）		//$zan_json是数组文件中设置的数组变量，存的是json数据----1		$zan_array = json_decode(str_replace("'",'"',$zan_json),true);				//获取当前的会员的uid-----2		$user_answer['uid']=$uid;		//获取对应的赞的回答的id----2		$user_answer['answer_id']=$_POST['answer_id'];				//将会员的uid和答案的id一块的数组放到指定的数组中----3		$zan_array[]=$user_answer;				$config_path = 'shuzu/ovovsys_zan.php';		if(!file_exists($config_path)){			$Base->ErrorMsg('文件错误：shuzu/ovovsys_zan.php 不存在！');exit();		}				//将指定的数组转换成json数据，并且将双引号转换成单引号，不然放到数组文件中后会出错----4		$zan_new_json = str_replace('"',"'",json_encode($zan_array));				$fp = @fopen($config_path,'r+');		if(!$content = @fread($fp,filesize($config_path))){			$Base->ErrorMsg('无法读取shuzu/ovovsys_zan.php文件！');exit();		}				//执行替换，将数组文件中对应的json数据----5		$content = str_replace("\$zan_json = \"{$zan_json}\"","\$zan_json = \"{$zan_new_json}\"",$content);		$fp = @fopen($config_path,'w+'); 		@fwrite($fp,$content); 				//修改对应的数据表中的数据----5		$Db->ThisQuery("update `".$db_prefix."ask_answers` set `goods`=`goods`+1 where `ans_id`=".$user_answer['answer_id']."");		exit();	break;	 case 'cai'://踩（不给力）		$cai_array = json_decode(str_replace("'",'"',$cai_json),true);		$user_answer['uid']=$uid;		$user_answer['answer_id']=$_POST['answer_id'];		$cai_array[]=$user_answer;		$config_path = 'shuzu/ovovsys_zan.php';		if(!file_exists($config_path)){			$Base->ErrorMsg('文件错误：shuzu/ovovsys_zan.php 不存在！');exit();		}		$cai_new_json = str_replace('"',"'",json_encode($cai_array));		$fp = @fopen($config_path,'r+');		if(!$content = @fread($fp,filesize($config_path))){			$Base->ErrorMsg('无法读取shuzu/ovovsys_zan.php文件！');exit();		}		$content = str_replace("\$cai_json = \"{$cai_json}\"","\$cai_json = \"{$cai_new_json}\"",$content);		$fp = @fopen($config_path,'w+'); 		@fwrite($fp,$content); 		$Db->ThisQuery("update `".$db_prefix."ask_answers` set `bads`=`bads`-1 where `ans_id`=".$user_answer['answer_id']."");		exit();	break;}?>

对应的数据文件（因为创建数据库时没有创建踩和赞的再断，所以这里就用php文件存变量的方式保存了一下答案对应的赞和踩的数据，其中包含用户的id和答案的id）

<?php $zan_json = "";$cai_json = "";?>你没看错，就是两个变量

如果嫌复制着麻烦的话，也可以点击下载压缩文件，亲，不要积分的哟！