Decryption of PHP7 underlying development principles: Understand the working principles and optimization techniques of the PHP parser

PHP is a widely used programming language for developing web applications. In the long history of PHP, new versions are constantly released, among which PHP7 is one of the most important versions. PHP7 introduces many new features and performance improvements to make it better at handling high-load web applications. In order to deeply understand the advantages of PHP7, we need to understand its underlying development principles and optimization techniques.

First, we need to understand how the PHP parser works. The PHP parser is an important component that converts PHP code into executable instructions. When we access a PHP web page in a web browser, the PHP parser will be responsible for reading and parsing the PHP code, converting it into executable instructions, and then executing it on the server. Simply put, a PHP parser is a translator that converts PHP code into executable code.

After understanding how the PHP parser works, we can start to explore how to optimize the performance of PHP applications. Here are some optimization tips:

1. Use the latest PHP version: Each PHP version has different performance improvements and new features. Using the latest version ensures you take advantage of these improvements.

2. Use OPcache: OPcache is a built-in extension of PHP used to cache compiled PHP scripts. It can greatly improve the performance of PHP applications, reducing parsing and compilation time every time the script is executed.

3. Reduce I/O operations: I/O operations are a performance bottleneck in PHP applications. Try to avoid frequent file read and write operations and use cache or in-memory database to optimize performance.

4. Use the right data structures and algorithms: Choosing the right data structures and algorithms can significantly improve the performance of your PHP application. Understand different data structures and algorithms and choose the most suitable one based on your actual needs.

5. Use cache: Using cache can reduce database query and calculation time. Caching frequently accessed data into memory can significantly improve the performance of your PHP applications.

6. Avoid overusing the database: Database queries are another performance bottleneck in PHP applications. Minimize the number of database queries and optimize performance by merging queries and using caching.

7. Use concurrency technology: Using concurrency technology can improve the concurrency performance of PHP applications. For example, use multiple threads or processes to handle concurrent requests, or use message queues to implement asynchronous processing.

8. Optimize SQL queries: Optimizing SQL queries can significantly improve the performance of PHP applications. Use indexes, merge queries, avoid using '*' and other techniques to optimize query statements.

To sum up, understanding the working principle and optimization techniques of the PHP parser is the key to optimizing the performance of PHP applications. By using the latest PHP version, using OPcache, reducing I/O operations, using correct data structures and algorithms, using caching, avoiding excessive database usage, using concurrency techniques and optimizing SQL queries, we can significantly improve the performance of PHP applications, and provide users with a better experience. Let us deepen our understanding of the underlying principles of PHP, continue to explore optimization techniques, and improve the performance of PHP applications.

The above is the detailed content of Decryption of PHP7 underlying development principles: Understand the working principles and optimization techniques of the PHP parser. For more information, please follow other related articles on the PHP Chinese website!