上海盛大 PHP工程师 面试题
来源:http://www.iteye.com/topic/833480
昨日赴上海盛大面试,应聘PHP工程师。
提前10分钟来到一楼大厅,大门口和门禁处都有2个门卫,俨然一副“正规军” 的样子,给人一种很严肃的感觉。
在大厅豪华访客接待座上等了几分钟,一美女拿着访客证过来带我上了4楼,把我“转交”给一位挂“红绳”的大哥。
然后进入一小会议室,开始“受审”:
首先,简单的介绍一下你自己。
叽里呱啦…叽里呱啦…
抖完家底后,开始技术问题:
1、HTTP协议中几个状态码的含义:503 500 401 200 301 302...
2、Safe_mode 打开后哪些地方受限.
3、熟悉哪些PHP开源框架,分别说说你对它们的理解。
4、熟悉jquery吗,谈谈它的选择器实现原理。
5、什么是怪异模式,标准模式,近标准模式。
6、围绕盒子模型讲一下,各浏览器在CSS渲染方面的差异。
以上都是考查基本知识
7、搭建和优化过lnmp环境吗?谈谈你是如何优化的,针对nginx、php、mysql分别讲述。
8、有一张表order(order_id,user_id,order_amount),写一条查询语句,取出所有消费总额超过100的用户的所有订单号order_id。
9、有一字符串格式如下:
(A(B)(C(D)(E))F)
字符串中的括号成对出现,写一函数取出第N(以左括号出现的顺序来索引)对括号里的内容。
例如:
function getcontent($id,$str){ ... } $str = '(A(B)(C(D)(E))F)'; getcontent(3,$str);
得到结果为(C(D)(E))
恳请各位大虾谈谈最后2题的最优解答。

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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SELECT aa.user_id,aa.order_id, FROM `order` aa LEFT JOIN
(
SELECT SUM(order_amount) AS order_amount,user_id FROM `order` GROUP BY `user_id`
) tt ON tt.user_id = aa.user_id AND tt.order_amount > 100