Professional skills that PHP practitioners must master at different stages
PHP junior development engineer
Skills that PHP junior development engineer needs to master
1. Enter the world of PHP
Introduction to PHP, history of PHP version development , PHP salary level and career development, introduction to basic concepts in WEB development, PHP development environment construction, HTML CSS and other introductory content.
2.PHP basic syntax
Variables, data types, constants, flow control, operators, strings, arrays, functions, etc.
3. PHP Advanced
HTTP protocol, super global variables, session control (session, cookie), file system, uploading files, image processing, etc.
4. MySQL database
Library, table, field type, SQL statement, transaction, lock, table engine, index, function, stored procedure, view, etc.
5.PHP operation MySQL Database
Use mysql extension functions to operate the database to implement functions such as adding, deleting, modifying, checking, searching, sorting, and page turning.
6. Implement commonly used functional modules
Register, log in, remember login status, retrieve password, unlimited levels, permissions (RBAC), etc.
7. Website Security
SQL injection, XSS (cross-site scripting attack), CSRF (cross-site request forgery), ARP attack, DDOS attack, credential stuffing, phishing website, SSL, etc.
8. WeChat interface development
WeChat ID application, WeChat type, receiving messages, sending messages, WeChat JS-SDK, WeChat payment, etc.
9. Soket programming
socket, TCP/UDP, constructing HTTP protocol strings, sending protocols, XML, regular expressions, web page collection, etc.
10.PHP multi-user WeChat mall system.zip (practical tutorial)
Requirements analysis, WeChat interface development, database design, mall backend, front desk, WeChat payment, obtaining nearby restaurants based on geographical location and other functions.
PHP Intermediate Development Engineer
Skills that PHP Intermediate Development Engineer needs to master
11. Website performance optimization
Staticization, caching, delayed loading, database optimization (sub-table, SQL Optimization, etc.), pseudo-static, URL rewriting, opcode cache, browser cache, sphinx full-text index engine, etc.
12.Memcache and Redis
memcache: installation, configuration, storage principle, queue, session storage, distribution. redis: installation, configuration, data types (string, collection, hash, list, subscription, transaction, etc.).
13. Object-oriented programming
Classes, objects, encapsulation, inheritance, polymorphism, interfaces, magic methods, reflection, design patterns, etc.
14. Write MVC framework
Single entry, routing, controller, model, view, ORM, form validation, image processing, verification code, security, DB driver (mysqli, pdo), code generation, etc. .
15. Practical combat: online payment and other interfaces
Tencent video API, online payment (WeChat payment, Alipay payment, online banking payment), video permission control (anti-leeching), login, registration, etc.
16. Version control tool-SVN
Working copy, data warehouse, hook script, permissions, conflicts, commits, updates, branches, SVN server, ignore, properties, etc.
17. Front-end and mobile app interface development
Web Service RESTFUL, SOAP, RPC.
18.ThinkPHP Framework
Routing, controller, model, form validation, configuration, extension, cache, template, etc.
19. Develop TP version code generator
Generate configuration files, generate controllers, generate models, generate pages, generate form verification, generate image processing and other functions.
20. Use TP framework to develop electronic mall
Commodity, type, attribute, brand, classification, inventory, order management, shopping cart, Alipay payment, WeChat payment, browsing history, sales ranking, product search, QQ login, WeChat login, login, registration, password retrieval, forgotten password, etc.
PHP Senior Development Engineer
Skills that PHP Senior Development Engineer needs to master
21.Linux operating system
Permissions, file systems, hard disk partitions, users, groups, shell scripts, Software installation (rpm, tarball, yum), vim, system services, firewall, lamp and lnmp environment construction, etc.
22. Large website cluster architecture
High availability, load balancing, reverse proxy, CDN, MySQL master-slave replication, read and write separation, MongoDB, distributed file system, session sharing, Nginx high concurrency Server etc.
23. Message Queue
Use httpsqs, Redis, MemcacheQ, etc. to build a message queue to solve the problem of high concurrency, high performance and real-time asynchronousness of the website to improve website performance.
24. Popular tools
GIT, Composer package dependency manager.

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The core method of building social sharing functions in PHP is to dynamically generate sharing links that meet the requirements of each platform. 1. First get the current page or specified URL and article information; 2. Use urlencode to encode the parameters; 3. Splice and generate sharing links according to the protocols of each platform; 4. Display links on the front end for users to click and share; 5. Dynamically generate OG tags on the page to optimize sharing content display; 6. Be sure to escape user input to prevent XSS attacks. This method does not require complex authentication, has low maintenance costs, and is suitable for most content sharing needs.

To realize text error correction and syntax optimization with AI, you need to follow the following steps: 1. Select a suitable AI model or API, such as Baidu, Tencent API or open source NLP library; 2. Call the API through PHP's curl or Guzzle and process the return results; 3. Display error correction information in the application and allow users to choose whether to adopt it; 4. Use php-l and PHP_CodeSniffer for syntax detection and code optimization; 5. Continuously collect feedback and update the model or rules to improve the effect. When choosing AIAPI, focus on evaluating accuracy, response speed, price and support for PHP. Code optimization should follow PSR specifications, use cache reasonably, avoid circular queries, review code regularly, and use X

PHPisstillrelevantinmodernenterpriseenvironments.1.ModernPHP(7.xand8.x)offersperformancegains,stricttyping,JITcompilation,andmodernsyntax,makingitsuitableforlarge-scaleapplications.2.PHPintegrateseffectivelyinhybridarchitectures,servingasanAPIgateway

Avoid N 1 query problems, reduce the number of database queries by loading associated data in advance; 2. Select only the required fields to avoid loading complete entities to save memory and bandwidth; 3. Use cache strategies reasonably, such as Doctrine's secondary cache or Redis cache high-frequency query results; 4. Optimize the entity life cycle and call clear() regularly to free up memory to prevent memory overflow; 5. Ensure that the database index exists and analyze the generated SQL statements to avoid inefficient queries; 6. Disable automatic change tracking in scenarios where changes are not required, and use arrays or lightweight modes to improve performance. Correct use of ORM requires combining SQL monitoring, caching, batch processing and appropriate optimization to ensure application performance while maintaining development efficiency.

To build a flexible PHP microservice, you need to use RabbitMQ to achieve asynchronous communication, 1. Decouple the service through message queues to avoid cascade failures; 2. Configure persistent queues, persistent messages, release confirmation and manual ACK to ensure reliability; 3. Use exponential backoff retry, TTL and dead letter queue security processing failures; 4. Use tools such as supervisord to protect consumer processes and enable heartbeat mechanisms to ensure service health; and ultimately realize the ability of the system to continuously operate in failures.

Use subprocess.run() to safely execute shell commands and capture output. It is recommended to pass parameters in lists to avoid injection risks; 2. When shell characteristics are required, you can set shell=True, but beware of command injection; 3. Use subprocess.Popen to realize real-time output processing; 4. Set check=True to throw exceptions when the command fails; 5. You can directly call chains to obtain output in a simple scenario; you should give priority to subprocess.run() in daily life to avoid using os.system() or deprecated modules. The above methods override the core usage of executing shell commands in Python.

The settings.json file is located in the user-level or workspace-level path and is used to customize VSCode settings. 1. User-level path: Windows is C:\Users\\AppData\Roaming\Code\User\settings.json, macOS is /Users//Library/ApplicationSupport/Code/User/settings.json, Linux is /home//.config/Code/User/settings.json; 2. Workspace-level path: .vscode/settings in the project root directory

Using the correct PHP basic image and configuring a secure, performance-optimized Docker environment is the key to achieving production ready. 1. Select php:8.3-fpm-alpine as the basic image to reduce the attack surface and improve performance; 2. Disable dangerous functions through custom php.ini, turn off error display, and enable Opcache and JIT to enhance security and performance; 3. Use Nginx as the reverse proxy to restrict access to sensitive files and correctly forward PHP requests to PHP-FPM; 4. Use multi-stage optimization images to remove development dependencies, and set up non-root users to run containers; 5. Optional Supervisord to manage multiple processes such as cron; 6. Verify that no sensitive information leakage before deployment