php实现加好友功能
思路:
1用户发送好友申请之后 把申请储存到申请数据表中,状态为 未验证
2 当用户登录时,查询申请表中是否有uid和被申请人id相同的,如果同意,更改状态,并把数据插入到对应的好友数据表否则,删除申请数据表中数据
3,当一方删除好友时,从被删除人中删除删除人的好友
4 创建分组名称字段,字段设定好值,让用户选择,或者让用户自定
5 当查询时候列出数据表信息
附:mysql数据表 共两个
#以上步骤是对数据库的操作,你可以<a><code class="php keyword">class = "inner-link decor-unline" href= "/search?word=实例化&fr=qb_search_exp&ie=gbk" target= "_blank" rel= "nofollow" data-word= "2" >实例化 ,#好友表 <a><code class="php keyword">class = "inner-link decor-unline" href= "/search?word=mysql_query&fr=qb_search_exp&ie=gbk" target= "_blank" rel= "nofollow" data-word= "0" >mysql_query ("CREATE TABLE `t_friend` ( `id` int(11) NOT NULL auto_increment COMMENT '自增id' , `uid` int(11) NOT NULL COMMENT '用户id' , `fid` int(11) NOT NULL COMMENT '好友uid,用,分割,可以有多个' , PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; #申请表 CREATE TABLE `t_shenqing` ( `id` int(11) NOT NULL auto_increment COMMENT '自增id' , `uid` int(11) NOT NULL COMMENT '被申请用户id userid' , `sid` int(11) NOT NULL COMMENT '好友申请人id' , `text` varchar(255) NOT NULL COMMENT '附言' , PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8; "); |
每一次用户请求操作,就会对数据库进行一次查询或更新,
- 1楼shooow前天 12:23
- 实现方法不错。

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

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.


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