Magic weapon to improve server performance: learn the underlying development principles of PHP8

Magic for improving server performance: Learn the underlying development principles of PHP8

With the rapid development of the Internet, server performance optimization has become more and more important. Among the many server-side programming languages, PHP is the most commonly used one and is widely used in web development. In the newly released PHP8 version, many performance-improving features and optimized underlying development principles have been introduced, providing us with more magic weapons to optimize server performance.

This article aims to introduce the underlying development principles of PHP8 and demonstrate its application in server performance improvement through code examples.

1. JIT compiler

In PHP8, the JIT (Just-In-Time) compiler is introduced, which is a dynamic compilation technology that can frequently execute The code blocks are compiled into machine code to improve execution efficiency.

The following is a simple sample code:

<?php
function factorial($n) {
    if ($n <= 1) {
        return 1;
    } else {
        return $n * factorial($n - 1);
    }
}

$start = microtime(true);

for ($i = 0; $i < 100000; $i++) {
    factorial(10);
}

$end = microtime(true);
$time = $end - $start;

echo "执行时间：" . $time . "秒";
?>

In PHP7 and previous versions, this sample code takes a long time to perform 100,000 factorial calculations. However, in PHP8, after enabling the JIT compiler, the execution time is significantly shortened, which greatly improves server performance.

2. Type system optimization

PHP8 optimizes the type system, allowing the declaration of function parameter and return value types. Through type declaration, the overhead of type conversion can be reduced and the execution efficiency of the code can be improved.

The following is a sample code using type declaration:

<?php
function add(int $a, int $b): int {
    return $a + $b;
}

$start = microtime(true);

for ($i = 0; $i < 100000; $i++) {
    add(1, 2);
}

$end = microtime(true);
$time = $end - $start;

echo "执行时间：" . $time . "秒";
?>

In the above code, by using type declaration in the function declaration, the types of parameters and return values ​​are specified to be integers. In this way, there is no need to perform type conversion when calling the function, thereby improving execution efficiency.

3. New data structures and algorithms

PHP8 introduces some new data structures and algorithms to optimize server performance. For example, a new implementation of hash tables was introduced, which has better performance on lookup and insertion operations.

The following is a sample code using the new hash table implementation:

<?php
$hashTable = new DsMap();

$hashTable->put('key1', 'value1');
$hashTable->put('key2', 'value2');
$hashTable->put('key3', 'value3');

$value = $hashTable->get('key2');

echo $value;
?>

In the above code, by using the new hash table implementation, the corresponding value can be quickly obtained based on the key , improving data access efficiency.

By studying the underlying development principles of PHP8, we have learned some methods and techniques that can optimize server performance. Features such as JIT compiler, type system optimization, and new data structures and algorithms provide us with more tools to improve server performance. By properly applying these principles and features, we can make the server handle a large number of requests more efficiently and provide a better user experience.

To sum up, learning the underlying development principles of PHP8 is of great significance for optimizing server performance. Through code examples, we can better understand the application of these principles. I hope this article will be helpful to readers in improving server performance!

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