PHP Programmer's growth plan

This is a creation in Article, where the information may have evolved or changed.

This article according to the current mainstream technology to do a basic comb, the whole is to assume that the PHP programmer is not a very solid foundation of the setting, and all the settings are very specific and clear, may make people feel uncomfortable, please understand only represents opinion. (Future technical changes are not covered)

First stage: Basic stage (basic PHP programmer)

Focus: LNMP Skilled (core is the basic operation of the installation configuration)

Objective: To complete basic LNMP system installation, simple configuration and maintenance, to be able to do basic PHP development of simple system, to support the development of a PHP function module in PHP medium-sized system.

Time: The time to complete this stage varies from person to person, and some grow up almost half a year on the past, growing slowly two or three years also have.

1.Linux:

Basic command, operation, startup, basic service configuration (including RPM installation files, various service configurations, etc.); write simple shell scripts and awk/sed script commands.

2.Nginx:

To be able to install configuration nginx+php, know the basic nginx core configuration options, know Server/fastcgi_pass/access_log and other basic configuration, the goal is to enable NGINX+PHP_FPM to work smoothly.

3.MySQL:

Will build MySQL, know the basic MySQL configuration options, know the difference between InnoDB and MyISAM, know the different configuration options for InnoDB and MyISAM two engines; know the difference between the basic two engines and choose the difference above; The ability to build a MySQL database and configure the code for normal and stable operation; The core idea is to be able to build a running MySQL database.

4.PHP:

Basic syntax array, string, database, XML, Socket, gd/imagemgk image processing, and so on, familiar with the various links with the MySQL operation of the API (MYSQL/MYSQLI/PDO), to understand the various coding problems; know the regular and skilled use of the PHP framework ( thinkphp, Zendframework, Yii, YAF, etc.); Understand how basic MVC works and why, a little bit about the differences between different PHP frameworks, and the ability to quickly learn an MVC framework. Be able to know the file directory organization in the development project, have the basic good code structure and the style, can complete the small system development and the medium system one module development work.

5. Front End:

If the condition time allows, you can properly learn the HTML/CSS/JS and other related knowledge, know what web standards, Div+css web/wap page pattern, know the difference between HTML5 and HTML4; understand some basic frontend just and JS framework (jquery and the like); Learn some basic JavaScript programming knowledge, (this item is not a must, if there is time, a little understanding is possible, but not recommended as the focus, unless the individual has a strong interest)

6. System Design:

Can complete the basic design of the small system, including the simple database design, can complete the basic: Browser---nginx+php database architecture design and development work, can support hundreds of thousands of to millions of daily traffic website development and maintenance work;

Phase II: Improvement phase (intermediate PHP Programmer)

Focus: Improve the skills for LNMP, can be more comprehensive to the LNMP have skilled application.

Objective: To set up the LNMP environment anytime, anywhere, to quickly complete the general configuration, to trace the most encountered development and online environment problems, to be able to independently assume the framework and development of the medium-sized system, to assume the development of a medium-sized module in a large-scale system;

1. Linux:

On the basis of the first stage, we can use the shell script to do a lot of automated work smoothly, Awk/sed/perl is also very good, can complete a lot of text processing and data statistics, etc., basically can install most non-special Linux programs (including various libraries, packages, Third-party dependencies and so on, such as MONGODB/REDIS/SPHINX/LUNCENE/SVN); Learn about basic Linux services, know how to view Linux performance metrics data, know basic Linux problem tracking, and more.

2. Nginx:

In the first stage of the foundation, understand the complex nginx configuration, including multi-core configuration, events, proxy_pass,sendfile/tcp_* configuration, know the time-out and other related configuration and performance impact; I know nginx in addition to Web server, Also can assume proxy server, reverse static server and other configuration; know the basic Nginx configuration tuning; Know how to configure permissions, compile an nginx extension to nginx; know the basic nginx operating principle (Master/worker mechanism, epoll), Know why Nginx performance is better than Apache performance and other knowledge;

3. Mysql/mongodb:

On the basis of the first stage, there are a number of tips on MySQL development, including regular SQL optimizations (group By/order By/rand Optimizations), and the ability to back up MySQL data in cold and hot, in addition to being able to build MySQL, and to know the impact innodb/ MyISAM Performance configuration options (such as key_buffer/query_cache/sort_buffer/innodb_buffer_pool_size/innodb_flush_log_at_trx_commit, etc.), also known How many of these options are configured to fit; also know some special configuration options, such as know how to build MySQL master-slave synchronization environment, know the difference between binlog_format; know MySQL performance tracing, including Slow_log/explain, Knowledge of basic indexing and processing is also possible, and the principle of understanding basic MySQL architecture (server+ storage engine), knowing the basic Innodb/myisam index storage structure and different (clustered index, B-tree); know the basic INNODB transaction processing mechanism; understand the big Some of the MySQL exception handling scenarios (or know where to find the solution). Conditions allow, it is recommended to understand the NoSQL representative MongoDB database, by contrast with the MySQL differences, colleagues can safely use MongoDB in the appropriate application scenarios, know the basic PHP with MongoDB development.

4. Redis/memcached:

In most of the medium-sized system will be involved in cache processing, so be sure to understand the basic cache; know the similarities and differences between Memcached and Redis and the application scenario, can install redis/memcached independently, understand some of memcahed's basic features and limitations, such as the most Large value values, knowing that PHP is combined with their use; Redis understands the basics of how and how to work, understand the general data types, know what types of scenarios to use, learn about Redis transactions, and more. Principle part, can understand the memory structure of memcached (slab mechanism), Redis understand the common data type underlying implementation of the storage structure (sds/linked list/skiplist/hashtable), and so on, by the way, know the Redis transaction, RDB, AoF and other mechanisms better

5. PHP:

In addition to the first-stage capabilities, installation configuration is free to install PHP and various third-party extensions of the compiled installation configuration; Understand most of the configuration options and implications of PHP-FPM (such as Max_requests/max_children/request_terminate_ Timeout and other impact performance configuration), know the difference between the mod_php/fastcgi, in PHP has been able to master a variety of basic technology, but also a variety of in-depth PHP, including a deep understanding of PHP object-oriented/spl/grammatical aspects of the special features such as reflection and so on; The framework has read at least one of the regular PHP MVC framework Code, know the basic PHP framework internal implementation mechanism and design ideas, in PHP development has been able to skillfully use the conventional design pattern to apply the development (abstract Factory/SINGLETON/Observer/Command chain/strategy/adapter and other modes); It is recommended that you develop your own PHP MVC framework to fully liberalize your development, allow yourself to understand the MVC pattern, and enable you to quickly upgrade your Business Project development, familiarize yourself with the various code optimization methods of PHP, and familiarize yourself with most of the PHP security-related issues, and familiarize yourself with the basic principles of PHP Execution ( Zend Engine/Extension basic working mechanism);

6. C + +:

began to dabble in a certain C + + language, be able to write basic C + + code, familiar with the basic C + + syntax (pointers, array operations, strings, general standard API) and data structures (linked list, tree, hash, queue) have a certain familiarity with the C language development below Linux has a basic understanding of the concept , will be simple makefile file writing, can use simple GCC/GDB program to compile simple debugging work, basic network programming have a general understanding. (This is to lay the groundwork for a higher level)

7. Front End:

On the basis of the first stage, familiarize yourself with the Basic HTTP protocol (Protocol Code 200/300/400/500, basic HTTP interaction header), allowing you to drill down to a slightly more elegant html+css+javascript, or be able to use some front-end frames roughly simply ( Jquery/yui/extjs/requirejs/bootstrap, etc.); if allowed, you can learn more about JavaScript programming, such as the closure mechanism, DOM processing, and more in-depth reading of the jquery source to do deep learning. (This item does not focus on learning unless it is interested in the front end)

8. System Design:

Able to support millions of to tens of thousands of daily traffic basic website development and maintenance work;

Phase III: Advanced stage (Advanced PHP programmer)

Emphasis: In addition to the basic LNMP program, you can also have in-depth learning in a certain direction or field. (Depth dimension development)

Objective: In addition to the ability to complete basic PHP business development, but also to solve most of the deep and complex technical problems, and can be independently designed to complete the large-scale system design and development work, oneself can hold into a technical direction independently, in this piece of comparative professional. (such as MySQL, Nginx, PHP, Redis, and so on in any direction in-depth research)

1. Linux:

In addition to the second phase of the ability, under Linux in addition to the general operation and performance monitoring tracking, but also can use a lot of advanced complex commands to complete the work (watch/tcpdump/starce/ldd/ar, etc.); in Shell scripting, has been able to write more complex shell scripts (more than 500 lines) to assist in the completion of a lot of tasks including backup, automated processing, monitoring and other work of the shell, Awk/sed/perl and other applications such as fire pure green, can freely manipulate the control of processing text statistical analysis of various complex formats of data; There is some understanding of the internal mechanism of Linux, the kernel module loading, startup error handling and so on have a basic processing, but also some other related things, such as NFS, Disk Management and so on;

2. Nginx:

In the second stage of the foundation, has been able to operate the nginx very skilled, can be more in-depth operation of nginx, such as monitoring, performance optimization, complex problem processing and so on; looking at personal interests, more aspects can be considered to focus on the Nginx working principle part of the deep learning, Mainly in the reading source, such as the specific master/worker work mechanism, nginx internal event processing, memory management and so on, but also can learn the development of Nginx extension, you can customize some of your own private extensions, but also to nginx+lua a certain degree of understanding, To see if a better model can be combined, the requirement of this stage is an in-depth understanding of the nginx principle, which can be considered as an in-depth professional in the nginx direction.

3. Mysql/mongodb:

In the second stage of the foundation, in the MySQL application, in addition to the previous basic SQL optimization, but also in the completion of a number of complex operations, such as the import and export of large quantities of data, a large number of online data change table structure or delete index fields and other high-risk operations; In addition to the installation configuration, have been able to deal with more complex MySQL problems, such as the tracing of various problems, master-Slave synchronization delay problem resolution, cross-room synchronization data scheme, MySQL high-availability architecture, etc. are involved in understanding; for MySQL application level, the core key technologies of MySQL are familiar, such as the transaction mechanism (Isolation level , locks, etc.), to trigger, partition and other technologies have a certain understanding and application; For MySQL performance, there are disk optimizations (SAS migration to SSD), Server optimizations (memory, server itself configuration), and other core performance tuning options in addition to the two phase (Innodb_log_buffer_ Size/back_log/table_open_cache/thread_cache_size/innodb_lock_wait_timeout, etc.), connection pooling software selection application, to show * (Show Status/show Profile) class operation statements have a deep understanding of the ability to complete most of the performance problems traced; MySQL backup technology in-depth familiarity, including disaster recovery, deep understanding of Binlog, hot and cold backup, multi-IDC backup, etc. in the MySQL principle, there is more understanding, such as the MySQL working mechanism to start reading some of the source code, such as the master-slave Synchronization (replication) technology source Learning, Or for a storage engine (MYISAM/INNODB/TOKUDB) and so on the source learning understanding, if the conditions allow, you can refer to the CSV engine to develop its own simple storage engine to save some data, enhance the understanding of MySQL, in this process, if you are interested in, You can also consider moving toward a DBA. MongoDB level, you can consider, for example, in the case of writing less read more and start to apply MongoDB online, or do some online data analysis processing operations, specific scenarios can follow the work, but the core is to better understand the Rmdbs and NoSQL different scenarios below the application, If the conditions or interests allow, you can begin to learn more about MongoDB's working mechanism.

4. Redis/memcached:

In the second stage of the foundation, can be more in-depth application and learning. Because memcached is not particularly complex, it is suggested that the source code can be read, especially the memory management part, to facilitate in-depth understanding; Redis section, you can do more complex data structure of the application (Zset to do leaderboard sorting operations/transactions to ensure atomicity in the second-class scene application and other use of operations), more involved in aof and other synchronization mechanisms of learning applications, design a highly available Redis application architecture and clustering; Suggestions can be in-depth study of the Redis source code, in the second stage accumulated knowledge can be applied, especially can read the core event management, memory management, internal core data structure and so fully learn to understand. If interest permits, you can become a very professional user of Redis.

5. PHP:

As a basic core skill, we need more in-depth learning and application on the basis of the second stage. From the basic code application above, can solve the PHP development encountered 95% of the problem, understand most of the PHP skills, for most of the PHP framework can be quickly used in a day, and understand the pros and cons of various mainstream PHP framework, can quickly facilitate the development of the project to do technology selection, in the configuration, in addition to The general second stage of knowledge, will understand some of the more biased gate configuration options (PHP auto_prepend_file/auto_append_file), including some of the extensions of the complex Advanced configuration and principles ( For example, Memcache.hash_strategy in memcached extended configuration, Apc.mmap_file_mask/apc.slam_defense/apc.file_update_ in APC extended configuration protection and so on), the working mechanism of PHP, including php-fpm work mechanism (such as PHP-FPM under different configuration machine to open process count and principle), Zend Engine has a basic familiarity (vm/gc/stream processing), Read the basic PHP kernel source (or read the related article), the PHP internal mechanism of most of the core data structure (basic type/array/object) implementation of understanding, for the core Infrastructure (ZVAL/HASHTABLE/GC) have deep learning understanding; Be able to carry out basic PHP extension development, understand some advanced knowledge of extended development (minit/rinit, etc.), familiar with PHP and Apache/nginx different communication interaction mode details (mod_php/fastcgi), in addition to developing PHP extensions, Consider learning to develop Zend extensions to understand PHP from a lower level.

6. C + +:

On the basis of the second stage, we can have a more in-depth understanding of the C + + language, and can complete the development of small and medium-sized/C + + systems. In addition to the basic second-stage base C/d syntax and data structure, you can learn some special data structures (b-tree/rb-tree/ Skiplist/lsm-tree/trie-tree, etc.) convenient in the special work of the requirements, in the system programming, familiar with multi-process, multi-threaded programming, multi-process situation below to understand most of the communication between many processes, can flexibly choose the means of communication (shared memory/semaphore/pipeline, etc.); multi-line Process programming can solve the problem of lock conflict, and be able to do multi-thread program development debugging work, but also familiar with the network programming, understand the multi-process model/multithreaded model/asynchronous Network IO Model of the difference and selection, familiar with the different asynchronous network IO model principles and differences (select/poll/ EPOLL/IOCP, etc.), and familiar with the common asynchronous framework (Ace/ice/libev/libevent/libuv/boost.asio, etc.) and use, if leisure can also look at some of the domestic development of the library (such as Muduo); High concurrency Program Architecture (leader-follow/master-worker, etc.); understand the problems in most of the development of back-end server (memory management, log printing, high concurrency, front-end communication Protocol, service monitoring) for most C/+ + + + backend servers, and know the RPC communication problems of each backend service ( STRUCT/HTTP/THIRFT/PROTOBUF, etc.); can be more familiar with the use of GCC and GDB to develop the compilation of debugging procedures, the online program core can be quickly traced to follow-up to solve the problem; For general purpose module Development, it is possible to accumulate or develop some common tools or libraries ( such as asynchronous network framework, log library, memory pool, thread pool, etc.), but whether the application should be cautious after development, save the pit to chase the bug;

7. Front End:

In-depth understanding of the HTTP protocol (including the specific protocol code and the reasons behind the detailed protocol, such as 302 static file cache, 502 is the nginx behind the PHP hang); In addition to the front-end aspects of the various framework application integration capabilities, the front-end of the study if interested can be more in-depth, the manifestation is, You can develop some kind of jquery-like front-end framework yourself, or develop a rich text editor and more trivial test JavaScript skill;

8. Other areas of language learning:

In the basic php/c/c++ language aspect has the fundamental accumulation, the suggestion in the current stage may try to learn the different programming language, sees the personal interest hobby, the script language can learn python/ruby and so on, the functional programming language may try Lisp/haskell/scala/ Erlang and the like, static language can try Java/golang, data statistical analysis can understand the R language, if you want to change perspective to do back-end business, you can try node. js and the previous mentioned with the Nginx combination of Nginx_lua and so on. Learning different languages is mainly about raising your horizons and solving the differences between the methods, such as understanding the process/thread, as well as the lightweight association, for example, under the cross-machine communication scenario, Erlang's solution is surprisingly simple, for example, if you do not want to choose C + +, there are similar efficient erlang/ Golang can be used, etc., mainly to enhance the field of vision.

9. Other Professional Direction study:

In this stage, in addition to the basic LNMP skills, will consider a number of other areas of knowledge learning, these are available, look at personal interests and long-term goal direction. At present, the situation can choose more areas, such as cloud computing (distributed storage, distributed computing, virtual machines, etc.), machine learning (data mining, pattern recognition, application to statistics, personalized recommendations), Natural language processing (Chinese word segmentation, etc.), search engine technology, graphic images, speech recognition and so on. In addition to these tall, there are many partial engineering aspects can be learned, such as high-performance systems, mobile development (Android/ios), computer security, embedded systems, hardware and other directions.

10. System Design:

System design on the basis of the second stage, can apply the mastered experience and skills, design a more complex medium and large system, can solve most of the problems of complex systems on the line, complete similar browser-like CDN, load balancer, such as access layer, nginx+php-& Gt Business Cache--database--Complex backend RPC interaction (storage backend, logical back end, reverse bi backend, external service)--more complex services for back-end Jiangzi, capable of supporting normal development and maintenance work for tens of millions of to hundreds of millions of traffic sites per day.

Stage Four: Architecture phase (architect)

PS: For the time being no discussion, wait for the next special article to describe the supplement to this part

Fifth stage: Expert stage (direction field expert)

PS: On the tall, this piece does not unfold the discussion ^_^

Stage Sixth: The scientist phase

PS: On the tall, this piece does not unfold the discussion ^_^

The original from the Thick Learning network: https://www.houxue.com/news/387987.html