在网上找了这方面的教程 但是基本就是没有人说什么 然后在某一天看见一个PHP程序设计出了一张类似这样的数据库设计图之后就有了很多领悟!下面是数据库的结构图
下面我们就来继续一下介绍
id 这个算是父Id 可以通过这个id来查询 在这个id下是否有子id 同时也可以记录这个是那条留言的id
son_id 这个是子id 然后通过这个id 可以找到相对应的父id
news_id 记录文章的id
sender_author 接受留言的人
receiver_author 发送留言的人
content 留言的内容
status 在有人回复你的帖子的时候 这个值从0转为1时候 该消息不在显示 如果没点击进去 该消息依然存在
time 记录留言的时间
留言板回复思路
当发送方(也就留言的人)要到该文章下留言或者回复的的时候就需要接收方(也就文章的作者或者要被回复的人)来接收。单数据库语句查询到这个键sender_author和receiver_author 的是就会知道接收方是谁和发送方是谁了。然后在根据这个判断来显示出回复内容
提示你有一条新的消息思路
当发送方发送消息的时候 这个status的值默认为0 就是提示接收发 你有一条新的消息。当点击进去的时候 调用数据库修改语句把指定的值修改成为1 这样就不显示了
查看评论的时候 的数据库操作语句
复制代码 代码如下:
function message($id){
$query = $this->db->query("SELECT * FROM message WHERE news_id = '$id'");//或者文章id后查询里面所有评论
return $query->result();
}
这个是获取父的留言内容的代码
复制代码 代码如下:
留言用户:receiver_author;?> 留言内容:content?>
用户是否登陆 并给予留言权限
复制代码 代码如下:
这个是显示了 获取指定的父id 之后来显示他里面的全部子id 和留言内容
复制代码 代码如下:
这里是楼 用户:receiver_author;?>
留言内容:content?>
$query = $this->db->query("select * from message where son_id ='$sel->id' order by id");//获取指定父id的子回复
$revis = $query->result();
foreach($revis as $row){?>
sender_author == $row->receiver_author){echo $row->sender_author;}
else{ echo $row->sender_author."回复了:".$row->receiver_author;}?>
内容是:content?>
这个是实现之后的效果图片 留言板已经实现了 留言内容回复
然后这个是实现了 回复你的时候 会显示你有一条新的留言

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.

In PHP, use the clone keyword to create a copy of the object and customize the cloning behavior through the \_\_clone magic method. 1. Use the clone keyword to make a shallow copy, cloning the object's properties but not the object's properties. 2. The \_\_clone method can deeply copy nested objects to avoid shallow copying problems. 3. Pay attention to avoid circular references and performance problems in cloning, and optimize cloning operations to improve efficiency.

PHP is suitable for web development and content management systems, and Python is suitable for data science, machine learning and automation scripts. 1.PHP performs well in building fast and scalable websites and applications and is commonly used in CMS such as WordPress. 2. Python has performed outstandingly in the fields of data science and machine learning, with rich libraries such as NumPy and TensorFlow.


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