Practical Guide to PHP8's Underlying Development Principles: Methods to Improve Server Performance

PHP is a commonly used server-side programming language that is widely used in web development. With the launch of PHP8, many developers have become keenly interested in its underlying development principles. This article will introduce a practical guide to the underlying development principles of PHP8 to help developers improve server performance.

1. Understand the optimization features of PHP8
   PHP8 brings many new optimization features, such as JIT compiler, attribute inference, static parameter type checking, etc. Understanding these optimization features can help developers take better advantage of PHP8's performance improvements. By using these features appropriately, server load can be reduced and response speed improved.
2. Use OPcache cache
   OPcache is an optimizer and cache extension for PHP that can improve the execution speed of PHP scripts. Developers can enable OPcache in PHP configuration and set parameters appropriately. By using OPcache caching, you can avoid re-parsing and compiling PHP scripts for each request and improve server performance.
3. Use stateless PHP
   PHP is a stateless programming language, and each request is independent. Developers should try to avoid using global variables and static variables in PHP scripts to reduce server load. Instead, you can use Session to maintain the user's state information.
4. Optimize database access
   The database is a key component of Web applications and has an important impact on server performance. Developers should minimize the number of database accesses and use batch operations and transactions to improve performance. In addition, using indexes and reasonable query statements can speed up the response speed of the database.
5. Use caching technology
   Caching is one of the important means to improve server performance. Developers can use caching technologies such as Memcached or Redis to store frequently used data and reduce access to the database. In addition, HTTP caching and browser caching can be used to improve the loading speed of web pages.
6. Avoid repeated calculations and IO operations
   Repeated calculations and frequent IO operations are the main bottlenecks in server performance. Developers should try to avoid repeated calculations and can use cache to save calculation results. In addition, asynchronous IO and multi-threading technology can also be used to handle concurrent requests and improve the server's concurrency capabilities.
7. Optimize code structure and algorithm
   Optimizing code structure and algorithm is an important means to improve server performance. Developers should try to avoid redundant code and complex algorithms, and use efficient data structures and algorithms to improve code performance. In addition, PHP extensions and external libraries can be used to replace certain time-consuming operations.
8. Monitor and optimize the server regularly
   Monitoring and optimizing server performance is an ongoing process. Developers should regularly monitor indicators such as server load, memory usage, and network latency, and optimize the server. You can use tools such as Nginx, ApacheBench, and XHProf for performance testing and analysis.

Summary:
This article introduces a practical guide to the underlying development principles of PHP8 to help developers improve server performance. By properly using the optimization features of PHP8, using OPcache caching, optimizing database access, using caching technology, avoiding repeated calculations and IO operations, optimizing code structure and algorithms, regularly monitoring and optimizing servers, the performance and response of web applications can be improved. speed. I hope this article will be helpful to developers in practicing the underlying development principles of PHP8.

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