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In-depth mastery of the underlying development principles and new features of PHP8: how to create scalable applications
Introduction
With the development of Internet technology, PHP has become the most popular One of the most popular web development languages. The latest version of the PHP language, PHP8, has made many improvements and optimizations in terms of underlying development principles and new features, allowing developers to better create scalable applications. This article will take you to deeply explore the underlying development principles and new features of PHP8, and give code examples to help you better understand.
1. Improvement of the underlying development principles of PHP8
<?php # Enable JIT compiler ini_set('opcache.enable', 1); ini_set('opcache.jit_buffer_size', 100M); ini_set('opcache.jit', 1205); # Your PHP code here ?>
<?php class Example { public int $number = 0; } $example = new Example(); $example->number = "test"; // 这里会报错,因为指定了属性的类型为int,不能赋值一个字符串 ?>
<?php $age = '18'; if ($age === 18) { echo "成年了"; } if ($age = 18) { // 这里会报错,因为在条件语句中不能使用赋值运算符 echo "成年了"; } ?>
2. New features of PHP8: How to create scalable applications
<?php #[Route("/user/{id}", methods: ["GET"])] class UserController { #[Inject] private UserService $userService; #[Authorize(roles: ["admin"])] public function getUser(int $id): User { // 代码逻辑 } } ?>
<?php function processInput(int|string $input): void { // 代码逻辑 } processInput("test"); // 正确,因为$input可以是int或string类型 processInput(123); // 正确,因为$input可以是int或string类型 processInput(1.23); // 报错,因为$input只能是int或string类型 ?>
Conclusion
The underlying development principles and new features of PHP8 provide developers with more powerful and efficient tools to create scalable applications much easier. Through in-depth study and understanding of these contents, combined with code examples in actual projects, developers can better utilize the new features of PHP8 to improve development efficiency and code quality. I hope this article is helpful to you, please leave a message below for discussion.
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