php模仿qq空间或朋友圈发布动态、评论动态、回复评论、删除动态或评论的功能(中)

在上一篇随笔中已经将如何发布动态呈现了,那么现在来看一下剩下的评论动态、回复评论、删除动态和评论功能,这几个功能会有点绕~~~

一、思路如下:

(1)你发表动态之后,会有人评论这一条动态,当评论之后,你也会回复该评论;(此处评论要单独一张表,回复也要单独一张表)

(2)删除动态:会将动态连同评论、回复全部删除;删除评论:只会删除该条评论

二、在写代码之前,我还是想把流程说一遍:

(1)发表动态---评论---回复---再回复

(2)将上边的流程细化,我先在纸上写出,再上传,码字不能表达清楚(注意的是,我想要的功能的实现,并不是一模一样的哈)

三、还是先将代码分块解释,最后将主页面代码完全附上(含上一篇)

在上一篇中已经实现发布动态、弹出评论框,那么现在接着向下走:

分别看一下qqfriends,qqdongtai,qqpinglun,qqhuifu表,这是初始状态:

先以用户李四登录,由数据库qqfriends表中知道,李四的好友是zhangsan, 和zhaoliu,那么他的空间中显示的好友动态如下:

与上一篇相比,在这一篇中,谁登录的我用中文显示的:

<?php

session_start();

$uid = "";

if(empty($_SESSION["uid"]))

{

header("location:login.php");

exit;

}

$uid = $_SESSION["uid"];

require "../DB.class.php";

$db = new DB();

$sql = "select name from qqusers where uid='{$uid}'";

$name = $db->strquery($sql);

echo "欢迎:"."<span class='qid' yh='{$uid}'>{$name}</span>";

?>

第一步:评论

1、评论张三的动态,点击“确定”后,就是第二张图了~

2、并将评论的内容写进数据库

//定义空字符串,容纳评论的id

var code="";

$(".pl").click(function(){

code = $(this).attr("code"); //将评论的id重新赋值

})

//将评论写进数据库

$("#tjpl").click(function(){

var plnr = $(".pldt").val();

var plid = code; //取发动态的id

$.ajax({

url:"pl-cl.php",

data:{plnr:plnr,plid:plid},

type:"POST",

dataType:"TEXT",

success:function(data){

alert("评论成功!");

window.location.href="main.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ;

}

});

})

pl-cl.php页面<br><br>

<?php

require "../DB.class.php";

$db = new DB();

session_start();

$uid = $_SESSION["uid"];

$plnr = $_POST["plnr"];

$dtid = $_POST["plid"];

$time = date("Y-m-d H:i:s", time());

$sql = "insert into qqpinglun values ('','{$dtid}','{$uid}','{$plnr}','{$time}')";

$db->query($sql,0);

?>

查看qqpinglun表中是不是多了这一条 “为什么开心呢?”:

3、读取评论内容:

<!--读取评论内容-->

<div id="dqpl">

<?php

$sql = "select * from qqpinglun";

$arr = $db->query($sql);

foreach($arr as $v)

{

$sql = "select * from qqdongtai where dtid='{$v[1]}'";

$arr2 = $db->query($sql);

foreach($arr2 as $m)

{

//取发动态的姓名

$sql = "select name from qqusers where uid='{$v[2]}'";

$name = $db->strquery($sql);

//若果是登录者评论则显示“我”

if($v[2]==$uid)

{

$name ="我";

}

//获取被评论者的姓名

$sql = "select name from qqusers where uid=(select uid from qqdongtai where dtid='{$v[1]}')";

$bpl = $db->strquery($sql);

echo "<div class='a'><span class='xm'>{$name}</span>评论<span class='xm'>{$bpl}</span>的动态:{$m[2]}<div>

<div class='b'>{$v[3]}</div>

<div class='c'>发表评论时间:{$v[4]}</div>

<div class='d'><button class='btn btn-primary hf' ids ='{$v[0]}'>回复

</button><span><a href='scpl-cl.php?code={$v[0]}'>删除评论</a></span></div>";

}

}

?>

</div>

第二步:回复

1、回复刚刚的评论:

2、将回复内容写进数据库

//定义空字符串,容纳回复评论的id

var ids="";

$(".hf").click(function(){

ids = $(this).attr("ids"); //将评论的id重新赋值

// alert((ids));

$('#mM').modal('show');

})

//将回复评论写进数据库

$("#tjhf").click(function(){

var hfnr = $(".hfpl").val();

// alert(hfnr);

// alert(ids);

$.ajax({

url:"hf-cl.php",

data:{hfnr:hfnr,ids:ids},

type:"POST",

dataType:"TEXT",

success:function(data){

alert("回复成功!");

window.location.href="main.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ;

}

});

})

 hf-cl.php页面

<?phprequire "../DB.class.php";

$db = new DB();

session_start();

$uid = $_SESSION["uid"];

$hfnr = $_POST["hfnr"];

$cid = $_POST["ids"];

$time = date("Y-m-d H:i:s", time());

$sql = "insert into qqhuifu values ('','{$cid}','{$uid}','{$hfnr}','{$time}')";

$db->query($sql,0);

?>

 查看qqhuifu表,是不是多了一行呢?

3、将回复内容读出:

<div id="dqhf">

<!--取一次回复-->

<?php

$sql = "select * from qqhuifu where cid in (select cid from qqpinglun)";

$arr = $db->query($sql);

foreach($arr as $a)

{

$sql = "select * from qqpinglun where cid='{$a[1]}'";

$arr2 = $db->query($sql);

foreach($arr2 as $n)

{

//取评论动态的姓名

$sql = "select name from qqusers where uid='{$a[2]}'";

$name = $db->strquery($sql);

//若果是登录者评论则显示“我”

if($a[2]==$uid)

{

$name ="我";

}

//获取被回复评论的姓名

$sql = "select name from qqusers where uid=(select uid from qqpinglun where cid='{$a[1]}')";

$bpl = $db->strquery($sql);

echo "<div class='a'><span class='xm'>{$name}</span>回复<span class='xm'>{$bpl}</span>的评论:{$n[3]}<div>

<div class='b'>{$a[3]}</div>

<div class='c'>回复时间:{$a[4]}</div>

<div class='d'><button class='btn btn-primary hf' ids ='{$a[0]}'>回复

</button><span><a href='schf-cl.php?code={$a[0]}'>删除回复</a></span></div>";

}

}

?>

</div>

回复内容已经显示了:

第三步:删除

1、删除动态:(含评论和回复)

scdt-cl.php

<?php

$code = $_GET["code"];

require "../DB.class.php";

$db = new DB();

$sql = "delete from qqdongtai where dtid='{$code}'";

$db->query($sql,0);

$sql2 = "delete from qqpinglun where dtid='{$code}'";

$db->query($sql2,0);

$sql3 = "delete from qqhuifu where cid=(select cid from qqpinglun where dtid='{$code}')";

$db->query($sql3,0);

header("location:main.php");

?>

2、删除评论:(含回复)

scpl-cl.php

<?php

$code = $_GET["code"];

require "../DB.class.php";

$db = new DB();

$sql2 = "delete from qqpinglun where cid='{$code}'";

$db->query($sql2,0);

$sql3 = "delete from qqhuifu where cid='{$code}'";

$db->query($sql3,0);

header("location:main.php");

?>

3、删除回复:(只自己)

schf-cl.php

<?php

$code = $_GET["code"];

require "../DB.class.php";

$db = new DB();

$sql2 = "delete from qqpinglun where cid='{$code}'";

$db->query($sql2,0);

$sql3 = "delete from qqhuifu where cid='{$code}'";

$db->query($sql3,0);

header("location:main.php");

?>

 关于删除就不依次试了~~~注意包含关系就好了

主页面全部代码:

<!DOCTYPE html>

<html>

<head>

<meta charset="UTF-8">

<title></title>

<!--引入bootstrap的css文件-->

<link type="text/css" rel="stylesheet" href="../bootstrap-3.3.7-dist/css/bootstrap.min.css" rel="external nofollow" />

<!--引入js包-->

<script src="../jquery-3.2.0.js"></script>

<!--引入bootstrap的js文件-->

<script src="../bootstrap-3.3.7-dist/js/bootstrap.min.js"></script>

<style>

#body{

height: auto;

width: 1000px;

margin: 0px auto;

}

#xdt{

height: 200px;

width:1000px;

border: 1px solid cadetblue;

}

/*动态和评论div*/

.fdt{

position: relative;

width: 1000px;

}

/*读取内容div*/

#nr{

width: 1000px;

}

/*谁发表动态样式*/

.a{

float: left;

min-height:40px;

width: 1000px;

background-color: goldenrod;

}

/*姓名*/

.xm{

font-size: 18px;

color: brown;

font-weight: bold;

}

/*发表动态样式内容*/

.b{

float: left;

text-align: left;

height:100px;

line-height: 50px;

width: 100%;

background-color: greenyellow;

}

/*发表时间与回复删除样式*/

.c{

height:30px;

width: 800px;

float: left;

font-size: 12px;

text-align:right;

background-color: gainsboro;

}

/*弹出模态框评论框*/

.d{

height:30px;

width: 200px;

float: left;

font-size: 15px;

text-align:center;

background-color: gainsboro;

}

/*读取评论div*/

#dqpl{

width: 1000px;

}

#dqhf

{

width: 1000px;

}

</style>

</head>

<body>

<div id="body">

<?php

session_start();

$uid = "";

if(empty($_SESSION["uid"]))

{

header("location:login.php");

exit;

}

$uid = $_SESSION["uid"];

require "../DB.class.php";

$db = new DB();

$sql = "select name from qqusers where uid='{$uid}'";

$name = $db->strquery($sql);

//这种方法可以取到uid。

echo "欢迎:"."<span class='qid' yh='{$uid}'>{$name}</span>";

?>

<!--写动态-->

<div id="xdt">

<p>发表动态:</p>

<textarea cols="100px" rows="5px" name="xdt" class="xdt"></textarea>

<input type="submit" value="发表" id="fb" />

</div>

<!--动态内容结束-->

<!--容纳动态内容-->

<div class="fdt">

<p style="color: brown; font-family: '微软雅黑';font-weight: bold;font-size: 20px; margin-bottom: 20px; margin-top: 20px;">朋友动态:<p>

<!--读取动态内容-->

<div id="nr">

<?php

$date = date ("Y-m-d H:i:s");

$sql = "select * from qqdongtai where uid='{$uid}' or uid in (select uid from qqfriends where fname =(select name from qqusers where uid='{$uid}')) order by time desc";

//echo $sql;

$arr = $db->query($sql);

// var_dump($arr);

foreach($arr as $v)

{

$sql = "select name from qqusers where uid='{$v[1]}'";

$name = $db->strquery($sql);

if($v[1]==$uid)

{

$name = "我";

}

echo "<div class='a'><span class='xm'>{$name}</span>发表动态:</div>

<div class='b'>{$v[2]}</div>

<div class='c'>发表动态时间:{$v[3]}</div>

<div class='d'><button class='btn btn-primary pl' data-toggle='modal' data-target='#myModal' code ='$v[0]'>评论</button>

<span><a href='scdt-cl.php?code={$v[0]}'>删除动态</a></span></div>";

}

?>

</div>

<!--读取评论内容-->

<div id="dqpl">

<?php

$sql = "select * from qqpinglun";

$arr = $db->query($sql);

foreach($arr as $v)

{

$sql = "select * from qqdongtai where dtid='{$v[1]}'";

$arr2 = $db->query($sql);

foreach($arr2 as $m)

{

//取发动态的姓名

$sql = "select name from qqusers where uid='{$v[2]}'";

$name = $db->strquery($sql);

//若果是登录者评论则显示“我”

if($v[2]==$uid)

{

$name ="我";

}

//获取被评论者的姓名

$sql = "select name from qqusers where uid=(select uid from qqdongtai where dtid='{$v[1]}')";

$bpl = $db->strquery($sql);

echo "<div class='a'><span class='xm'>{$name}</span>评论<span class='xm'>{$bpl}</span>的动态:{$m[2]}<div>

<div class='b'>{$v[3]}</div>

<div class='c'>发表评论时间:{$v[4]}</div>

<div class='d'><button class='btn btn-primary hf' ids ='{$v[0]}'>回复

</button><span><a href='scpl-cl.php?code={$v[0]}'>删除评论</a></span></div>";

}

}

?>

</div>

<!--读取回复的内容-->

<div id="dqhf">

<?php

$sql = "select * from qqhuifu where cid in (select cid from qqpinglun)";

$arr = $db->query($sql);

// var_dump($arr);

foreach($arr as $a)

{

$sql = "select * from qqpinglun where cid='{$a[1]}'";

$arr2 = $db->query($sql);

// var_dump($arr2);

foreach($arr2 as $n)

{

//取评论动态的姓名

$sql = "select name from qqusers where uid='{$a[2]}'";

$name = $db->strquery($sql);

//若果是登录者评论则显示“我”

if($a[2]==$uid)

{

$name ="我";

}

//获取被回复评论的姓名

$sql = "select name from qqusers where uid=(select uid from qqpinglun where cid='{$a[1]}')";

$bpl = $db->strquery($sql);

echo "<div class='a'><span class='xm'>{$name}</span>回复<span class='xm'>{$bpl}</span>的评论:{$n[3]}<div>

<div class='b'>{$a[3]}</div>

<div class='c'>回复时间:{$a[4]}</div>

<div class='d'><button class='btn btn-primary hf' ids ='{$a[0]}'>回复

</button><span><a href='schf-cl.php?code={$a[0]}'>删除回复</a></span></div>";

}

}

?>

</div>

</div>

<!-- 评论模态框(Modal) -->

<div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">

<div class="modal-dialog">

<div class="modal-content">

<div class="modal-header">

<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>

<h4 class="modal-title" id="myModalLabel">评论</h4>

</div>

<textarea class="modal-body pldt" cols="80px"></textarea>

<div class="modal-footer">

<button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>

<button type="button" class="btn btn-primary" id="tjpl">提交评论</button>

</div>

</div>

</div>

</div>

<!--模态框结束-->

<!-- 回复模态框(Modal) -->

<div class="modal fade" id="mM" tabindex="-1" role="dialog" aria-labelledby="myModalLabel" aria-hidden="true">

<div class="modal-dialog">

<div class="modal-content">

<div class="modal-header">

<button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button>

<h4 class="modal-title" id="myModalLabel">回复</h4>

</div>

<textarea class="modal-body hfpl" cols="80px"></textarea>

<div class="modal-footer">

<button type="button" class="btn btn-default" data-dismiss="modal">关闭</button>

<button type="button" class="btn btn-primary" id="tjhf">提交回复</button>

</div>

</div>

</div>

</div>

<!--模态框结束-->

</div>

</body>

</html>

<script>

//ajax方法:刷新页面时将内容读取出来,并按发表时间读出来

// $.ajax({

// url:"sx-cl.php",

// dataType:"TEXT",

// success:function(data){

// var hang = data.trim().split("|");

// var str="";

// for(var i=0;i<hang.length;i++)

// {

// var lie = hang[i].split("^");

// str = str + "<div class='a'><span class='xm'>"+lie[1]+"</span>发表动态:</div><div class='b'><p>"+lie[2]+"</p><div class='c'>发表动态时间:"+lie[3]+"</div>";

// str =str+"<div id='d'><button class='btn btn-primary pl' data-toggle='modal' data-target='#myModal' code ='"+lie[0]+"'>评论</button><span><a href='del.php?code="+lie[0]+"'>删除动态</a></span></div>";

// }

// $("#nr").html(str);

// //点击“评论按钮”实现将code值传到模态框的“提交按钮”

// //为什么放在此处:因为ajax是异步的,如果不放在此处会加不上点击事件

// $(".pl").click(function(){

// code = $(this).attr("code"); //将评论的id重新赋值

// })

// }

// });

//

//php方法: 当发表动态时,将动态内容写进数据库,并刷新页面

$("#fb").click(function(){

var dt= $(".xdt").val();

var uid = $(".qid").attr("yh");

$.ajax({

url:"main-cl.php",

data:{dt:dt},

type:"POST",

dataType:"TEXT",

success:function(data){

alert("发表动态成功!");

window.location.href="main.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ;

}

});

})

//定义空字符串,容纳评论的id

var code="";

$(".pl").click(function(){

code = $(this).attr("code"); //将评论的id重新赋值

})

//将评论写进数据库

$("#tjpl").click(function(){

var plnr = $(".pldt").val();

var plid = code; //取发动态的id

// alert(plnr);

// alert(plid);

$.ajax({

url:"pl-cl.php",

data:{plnr:plnr,plid:plid},

type:"POST",

dataType:"TEXT",

success:function(data){

alert("评论成功!");

window.location.href="main.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ;

}

});

})

//定义空字符串,容纳回复评论的id

var ids="";

$(".hf").click(function(){

ids = $(this).attr("ids"); //将评论的id重新赋值

// alert((ids));

$('#mM').modal('show');

})

//将回复评论写进数据库

$("#tjhf").click(function(){

var hfnr = $(".hfpl").val();

// alert(hfnr);

// alert(ids);

$.ajax({

url:"hf-cl.php",

data:{hfnr:hfnr,ids:ids},

type:"POST",

dataType:"TEXT",

success:function(data){

alert("回复成功!");

window.location.href="main.php" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ;

}

});

})

</script>

到此处为止,动态的发布、动态的评论、动态的回复、动态的删除都已经写完了,但是有个问题还还还没解决完,也就是回复的回复问题。请看下面的简图:

也就是回复表中有一部分是回复的评论,而剩余的部分则是回复的回复(有点绕)想看的就继续关注(下)未完待续~~~

 

先总结一下遇到的问题:

(1)为什么ajax输出的button添加不上点击事件?

     因为ajax是异步ajax,所以要紧接其后。

(2)为什么取不到button的值------this

(3)一个php页面中,什么时候用ajax?什么时候用php?

    在这个实例中,我用ajax将数据写进数据库;用php从数据库读取内容。(上一篇中,动态是用ajax读取的,在这一篇中,两种方法都有,详情请看全部代码)

(4)最后,逻辑清晰很关键,尤其是表与表之间的关联。

以上是 php模仿qq空间或朋友圈发布动态、评论动态、回复评论、删除动态或评论的功能(中) 的全部内容, 来源链接: utcz.com/z/352186.html

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