记录下来,随时查阅,共同提高!
--------------------------10-9
Mysql----doc
http://database.51cto.com/art/200811/98728.htm
http://developer.51cto.com/art/201105/265961.htm
http://developer.51cto.com/art/201007/213557_1.htm
)不断巩固,摸透大部分PHP常用函数,并可理解OOP,MYSQL优化,以及模板;
Poppen.de是德国的一个社交网站
使用启用了APC的PHP5.3.x
51CTO推荐阅读:Nginx + PHP-FPM + APC=绝妙的组合
程序代码是基于Symfony1.2框架之上开发的。
网站性能优化使用XHProf,这是Facebook开源出来的一个类库。这个框架非常容易个性化和配置,能够可以缓存大部分高代价的服务器计算。这台机器已经使用了4 年,下一步计划会使用共享集群来替换它。目前仍基于这个系统上进行设计,以简化数据访问代码。根据用户ID进行数据分区,因为网站中大部分信息都是以用户 为中心的,如照片、视频、消息等
有三台服务器按主-从-从配置架构提供用户论坛服务。一台从服务器负责网站自定义消息存储,到现在有 2.5亿条消息。另外四台机器为主-从配置关系。另外由4台机器配置成NDB族群专门服务于密集型写操作数据,如用户访问统计信息。
数据表设计尽量避免关联操作,尽可能缓存最多的数据。当然,数据库的结构化规范已经完全被破坏掉了。因此,为了更容易搜索,数据库设计创建了数据挖掘表。大部分表是MyISAM型表,可以提供快速查找。现在的问题是越来越多的表已经全表锁住了。Poppen.de正考虑往XtraDB存储引擎上迁移。
Memcached
网站架构中Memcached应用相当多,超过45GB的高速缓存和51个节点。缓存了Session会话、视图缓存以及函数执行缓存等。架构中有一个系统 当记录被修改时可以自动地把数据更新到缓存中去。未来改善缓存更新的可能方案是使用新的Redis Hash API或者MongoDB。
2、命令
必须熟悉PHP带的一些常用命令及其常用选项,熟悉那些命令,自己运行php.exe -h 如果这些命令你没有全部使用过,那么你对PHP实际上还很不了解。
3、工具
必须至少熟练使用一种IDE的开发工具,例如:Eclipse、Netbeans、zend或者editplus,ultraedit,包括进行工程管理、常用选项的设置、PHP插件的安装配置以及进行调试。
4、API
PHP的核心API是非常庞大的,但是有一些内容笔者认为是必须熟悉的,否则不可能熟练的运用PHP,包括:
(1)文件目录处理函数包80%以上的函数的功能的灵活运用。
(2) 日期时间函数中的80%以上的函数的功能的灵活运用
(3) 数学函数库中的100%的内容。
(4) 网络库中的60%以上的内容,对各个函数的功能比较熟悉。
(5) 字符串处理函数下的60%以上的内容,特别是各种处理函数。
(6) 正则表达式函数下的90%以上的内容,特别是各种正则处理
(7) 一些安全库下的40%以上的内容,如果对于安全没有接触的话根本就不可能掌握PHP
(8) XML处理,熟悉SAX、DOM以及JDOM的优缺点并且能够使用其中的一种完成XML的解析及内容处理。
(9) 图形图像函数库下的80%以上的内容,特别是一些图像生成和处理
(10) MySQL 数据库函数下的90%以上的内容,特别是处理各种数据的函数
(11) 数组处理函数下的90%以上的内容,特别是各种操作处理函数
(12) 其它PEAR,PECL,和一些扩展类库中的80%以上的内容,特别是一些常用的类的处理
(13) 针对不同的需求,查找不同的函数库。
5、测试
必须熟悉使用phpunit编写测试用例完成代码的自动测试。
6、管理
必须熟悉使用xinc, phing等完成工程管理的常用任务,例如工程编译、生成phpdoc、生成、版本控制、自动测试。
7、排错
应该可以根据异常信息比较快速的定位问题的原因和大致位置。
8、思想
必须掌握OOP的主要要求,这样使用PHP开发的系统才能是真正的PHP系统。
9、规范
编写的代码必须符合流行的编码规范,这样程序的可读性才比较好。
10、博学
掌握OOA、OOD、MS SQL Server、Oracle 、Zendframework、cakephp、symfony、模板技术等流行技术,掌握软件架构设计思想、搜索引擎优化、缓存系统设计、网站负载均衡、系统性能调优等实用技术。
综合上述,没发现PHP和java有什么不同!PHP和Java,还是.net一样要学的东西有很多!

PHP is widely used in e-commerce, content management systems and API development. 1) E-commerce: used for shopping cart function and payment processing. 2) Content management system: used for dynamic content generation and user management. 3) API development: used for RESTful API development and API security. Through performance optimization and best practices, the efficiency and maintainability of PHP applications are improved.

PHP makes it easy to create interactive web content. 1) Dynamically generate content by embedding HTML and display it in real time based on user input or database data. 2) Process form submission and generate dynamic output to ensure that htmlspecialchars is used to prevent XSS. 3) Use MySQL to create a user registration system, and use password_hash and preprocessing statements to enhance security. Mastering these techniques will improve the efficiency of web development.

PHP and Python each have their own advantages, and choose according to project requirements. 1.PHP is suitable for web development, especially for rapid development and maintenance of websites. 2. Python is suitable for data science, machine learning and artificial intelligence, with concise syntax and suitable for beginners.

PHP is still dynamic and still occupies an important position in the field of modern programming. 1) PHP's simplicity and powerful community support make it widely used in web development; 2) Its flexibility and stability make it outstanding in handling web forms, database operations and file processing; 3) PHP is constantly evolving and optimizing, suitable for beginners and experienced developers.

PHP remains important in modern web development, especially in content management and e-commerce platforms. 1) PHP has a rich ecosystem and strong framework support, such as Laravel and Symfony. 2) Performance optimization can be achieved through OPcache and Nginx. 3) PHP8.0 introduces JIT compiler to improve performance. 4) Cloud-native applications are deployed through Docker and Kubernetes to improve flexibility and scalability.

PHP is suitable for web development, especially in rapid development and processing dynamic content, but is not good at data science and enterprise-level applications. Compared with Python, PHP has more advantages in web development, but is not as good as Python in the field of data science; compared with Java, PHP performs worse in enterprise-level applications, but is more flexible in web development; compared with JavaScript, PHP is more concise in back-end development, but is not as good as JavaScript in front-end development.

PHP and Python each have their own advantages and are suitable for different scenarios. 1.PHP is suitable for web development and provides built-in web servers and rich function libraries. 2. Python is suitable for data science and machine learning, with concise syntax and a powerful standard library. When choosing, it should be decided based on project requirements.

PHP is a scripting language widely used on the server side, especially suitable for web development. 1.PHP can embed HTML, process HTTP requests and responses, and supports a variety of databases. 2.PHP is used to generate dynamic web content, process form data, access databases, etc., with strong community support and open source resources. 3. PHP is an interpreted language, and the execution process includes lexical analysis, grammatical analysis, compilation and execution. 4.PHP can be combined with MySQL for advanced applications such as user registration systems. 5. When debugging PHP, you can use functions such as error_reporting() and var_dump(). 6. Optimize PHP code to use caching mechanisms, optimize database queries and use built-in functions. 7


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