Must-learn server performance optimization: in-depth understanding of the underlying development principles of PHP8

Must learn server performance optimization: in-depth understanding of the underlying development principles of PHP8

In recent years, with the rapid development of Internet technology, server performance optimization has become an important issue for every developer Skills that everyone should master. In PHP development, an in-depth understanding of the underlying development principles of PHP8 is the key to improving server performance. This article will introduce some common server performance optimization technologies from the perspective of the underlying development principles of PHP8, and attach relevant code examples.

1. Use OPcache to accelerate PHP script parsing
   OPcache is a feature officially launched by PHP. It is used to compile PHP scripts into bytecode and cache them to improve the execution efficiency of the script. In PHP8, the OPcache function has been further optimized, making the parsing speed of PHP scripts significantly improved compared to previous versions. The following is a sample code using OPcache:

<?php
// 开启OPcache
opcache_enable();

// 编译并缓存脚本
opcache_compile_file('path/to/your/script.php');

// 执行脚本
require_once 'path/to/your/script.php';

2. Use the JIT compiler to improve the execution speed of PHP scripts
   PHP8 introduces the JIT (Just In Time) compiler, by editing PHP words Real-time optimization of code to improve the execution speed of PHP scripts. The following is a sample code using the JIT compiler:

<?php
// 开启JIT编译器
ini_set('opcache.jit', 'tracing');

// 编译并缓存脚本
opcache_compile_file('path/to/your/script.php');

// 执行脚本
require_once 'path/to/your/script.php';

3. Use asynchronous programming to improve the concurrent processing capabilities of PHP scripts
   In PHP8, the feature of asynchronous programming is introduced, which can be processed asynchronously Multiple requests improve the concurrent processing capabilities of PHP scripts. The following is a sample code using asynchronous programming:

<?php
// 创建异步上下文
$context = stream_context_create(['http' => ['method'  => 'GET']]);

// 异步发送请求
$stream = fopen('http://example.com/api', 'r', false, $context);

// 异步读取返回结果
stream_set_blocking($stream, 0);
while (!feof($stream)) {
    echo fread($stream, 8192);
    ob_flush();
    flush();
}
fclose($stream);

4. Avoid overuse of database queries
   Database queries are one of the bottlenecks of server performance, and excessive use will cause the server to be overloaded. To improve performance, consider using caching technology or optimizing database query statements. The following is a sample code using caching technology:

<?php
// 尝试从缓存中获取数据
$data = $cache->get('data_key');

// 如果缓存中不存在，则从数据库中查询数据
if (!$data) {
    $data = $db->query('SELECT * FROM data')->fetchAll();

    // 将查询结果缓存起来
    $cache->set('data_key', $data, 3600); // 缓存有效期为1小时
}

// 使用数据
foreach ($data as $row) {
    // do something
}

Through an in-depth understanding of the underlying development principles of PHP8, we can better understand the execution mechanism of PHP scripts, so as to optimize server performance in a targeted manner . Of course, the above are just some common technical examples, and actual performance optimization needs to be adjusted and optimized according to specific situations and needs. I hope this article will be helpful to everyone in optimizing server performance.

The above is the detailed content of Must-learn server performance optimization: in-depth understanding of the underlying development principles of PHP8. For more information, please follow other related articles on the PHP Chinese website!