1. Be proficient in PHP object-oriented programming, strictly follow PSR4 specifications, and have good coding habits 2. Be proficient in common PHP design patterns (single case mode, factory pattern, etc.) 3. Be proficient in using TP framework and understand mainstream methods such as Laravel Framework 4. Proficient in Linux and building development and testing environments and common services 5. Proficient in using HTML5/CSS3, BootStrap for responsive layout, and Flex Rem elastic layout 6. Proficient in using JavaScript for front-end and back-end interactions, and relatively knowledgeable about cross-domain issues 7 . Proficient in using Git for code version management 8. Mastering Memcache cache and Redis queue 9. Proficient in database design and optimization (partitioning, databases, tables, etc.) 10. Mastering the RESTful interface style and 11. Mastering the optimization of front-end, PHP, and Nginx 12. Master PHP-Socket programming and be familiar with PHP extension Swoole. 13. Understand the development of WeChat official accounts and WeChat payment 14. Strong ability to read and write interface documents