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What are the common interview questions in PHPer for 3-5 years? many beginners are not very clear about this. In order to help you solve this problem, the following editor will explain it in detail. People with this need can come and learn. I hope you can get something.

See that there are many, to sum up, more suitable for PHPer with certain experience

Which php books and blogs do you like? CSDN, Tiger sniff, Hunting Cloud

What is a js closure and do you know about the prototype chain?

Which is faster, for or foreach?

Who is Brother php Bird? Can you tell me the principle of php implementation?

What are the php accelerators? Apc 、 xcache. Can you talk about its acceleration principle, how is it different from the current O+?

Can Node.js completely replace php+apache?

How to determine whether a value exists in an array? Which is better for in_array () or array_key_exists?

How can I tell if an index is used in a select statement? Use of explain, etc.

Does sphinx's Chinese word segmentation thesaurus use a third-party database or build its own database?

What are the differences between mysql and mysqli?

What is the future direction? Security, or data mining, big data processing?

Object-oriented of php: class modifiers, encapsulation, inheritance, polymorphism, etc.

Php design pattern: singleton mode, factory mode, producer mode. Wait for 23 species

Server status codes: 200, 202, 301, 404, 500.

What is the difference between iTunes + and + + iTunes + and + + I?

Project development: persistence of shopping cart data in e-commerce projects, security considerations of the examination system,

The basis of mysql design: three paradigms, function-> mind map, what is the first field of creating a table?

Number of mysql field char, varchar, int, smallint, tinyint, mediumint, bigint, decimal, double, float bytes and application scenarios

What are the mysql data types? How much storage space are occupied respectively?

Mysql Index principle and sql performance Optimization

What are the usage scenarios of memcache, mongoDB and Redis respectively?

Why do mongoDB and Redis not compete but complement each other?

What are the Redis data types? Int 、 string 、 hash 、 set 、 list?

Do you use make or yum when installing linux software?

Linux network optimization, how to view the process, how to view the maximum number of file openings?

What should I do if a Weibo post is pushed to 1 million fans?

What algorithms do you know? Bubble sort? Quick sort? Binary search?

Respective advantages of yii thinkphp ci

What are the php design patterns?

What is the virtual function in C language?

What are the C sorting algorithms?

What is the basic structure of php?

Memcache magent distributed Design?

What is the memory recovery mechanism of php?

Php appeared hash collision at the end of 2011. The principle of hash collision is? How to fix it?

What is the interpretation process of an php file? What are the general acceleration php? What technologies will be used to improve the overall performance of php?

Redis distributed design, how to design?

What is the mongo cluster architecture?

What does the osi7 layer mean by the tcp/ip network protocol?

Php handles big data's business

Linux application, load performance check?

Nginx is set to cache js, css, pictures and other information. What is the implementation principle of caching?

What are the nginx load balancers? If one of the servers goes down, how can the alarm mechanism be implemented?

Nginx actual combat optimization business function?

Can you talk about your proud work in the past three years?

If you look at your resume, you will ask about the number of users, pv, throughput, related difficulties and solutions of some projects done in the past.

Database design experience, why sub-table? Sub-library?

In general, how much data begins to be divided into tables? Sub-library? What is the purpose of sub-database and sub-table? What is a vertical split of the database? Horizontal split? Division and so on? Examples can be given to illustrate

What are the database optimizations? What do you need to pay attention to respectively?

What caches will be encountered in web development? How to optimize them respectively?

Give you 256m of memory, sort 10G files (1 number per line), how to achieve?

How to find 10G files?

How to count the number of times each keyword appears in 10G files?

If you are now the designer of the 12306 train booking, how do you design to meet the booking of the people all over the country?

If you have 100 million users, what is your server architecture? How to design the storage scheme of user information?

How can you solve the problem if you are the technical team leader and the task schedule of the team cannot be completed?

If you insert a task on the premise of a full schedule, how do you ensure that the overall schedule is not delayed?

If some engineers don't finish the scheduled task today, how should you solve it?

From your experience, how to build a high-performance web site? What links are needed? Steps? What do you need to pay attention to in each step and how to optimize it?

Why the master-slave separation of the database?

How to deal with multi-server sharing session?

A 10G table, you use the php program to count the number of times a field appears, the idea is?

Will tell you a nginx log example, using what you think is the best programming language to count the top 10 url whose http response time exceeds 1 second?

Give you a mysql configuration file and parse it in what you think is the best programming language?

Give you two paths an and b, write an algorithm or idea to calculate the gap between an and b and show the intersection of an and b?

Give you a url, configure rewrite in nginx to specify a specific path?

The difference between the life cycle of session and cookie? Storage location difference?

The difference between require, include, require_once and include_once? Load difference? How do you implement if the program loads a php file on demand?

Chrome is called multithreaded, so what's the difference between multithreading and multiprocess?

How to improve cache hit ratio? How to granulate the cache?

What are the unsafe factors in web? How to prevent them respectively?

If two single linked lists intersect, write an optimal algorithm to calculate the location of the intersection.

What if you are the technical team leader? How to improve team efficiency?

Under the premise of no optimization, what is the general maximum number of connections in apache? What is the general maximum number of connections for nginx? Mysql insert per second? Select? Update? Delete?

I've asked all my questions (not so many, of course). Do you have any questions for me?

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