When was php8 released?

PHP8 was released on November 18, 2020. PHP8 is the latest version of the PHP programming language. It brings many useful new features and performance improvements. Some of the main highlights of this version include: Performance improvements , type deduction, named parameters, union types, properties, error handling, asynchronous programming and the new standard library, etc. These improvements can improve developers' development efficiency, improve code readability, maintainability and robustness, and can also better support complex applications and scenarios.

The operating system of this tutorial: Windows10 system, PHP version 8.1.3, DELL G3 computer.

PHP 8 was released on November 18, 2020. PHP 8 is the latest version of the PHP programming language, which brings many useful new features and performance improvements. Some of the major highlights of this release include: performance improvements, type inference, named parameters, union types, properties, error handling, asynchronous programming, a new standard library, and more.

Performance improvement is one of the most important features of PHP 8. It uses a more efficient JIT (Just-In-Time) compiler, which can compile and optimize some frequently executed codes to improve running speed. According to PHP official test data, the performance of PHP 8 is 10% to 15% higher than that of PHP 7.4. This is a very attractive feature for large applications and web servers that need to handle a large number of requests.

PHP 8 also introduces the type inference function, allowing developers to automatically deduce the type of variables when declaring variables. This feature can help developers write type-safe code more easily and reduce potential errors and vulnerabilities. At the same time, type derivation can also improve the readability and maintainability of code.

Another important feature is named parameters. PHP 8 introduced the named parameter feature, allowing developers to call functions by parameter name instead of parameter order. This feature can improve code readability and maintainability, especially when dealing with complex function calls.

In addition, PHP 8 also introduced the union types function, allowing a variable to have multiple types at the same time. This feature simplifies type checking and type conversion, reducing potential errors and vulnerabilities.

PHP 8 introduced the attribute function, allowing developers to add metadata to classes and methods. This feature can improve code readability and maintainability, while also supporting more language features such as reflection and decorators.

PHP 8 improves the error handling mechanism and introduces a new ErrorException class and try-catch-finally statement. This feature makes it easier to handle exceptions and errors and improves the robustness of your code.

PHP 8 also introduces asynchronous programming capabilities, allowing developers to write non-blocking code and improve the concurrency performance of the program. This feature is especially important for web applications that handle high concurrency.

PHP 8 introduces many new standard library functions, such as array_column(), count_if(), is_same_size(), etc. These new functions make it easier to handle arrays and collection data, making your code more readable and maintainable.

Finally, PHP 8 has also made many improvements in security, such as removing the unsafe magic quotes function and improving input validation. These improvements can reduce the risk of attacks on applications.

In short, PHP 8 is an important version that provides developers with many useful new features and performance improvements. These improvements can improve developers' development efficiency, improve code readability, maintainability and robustness, and can also better support complex applications and scenarios. Therefore, PHP 8 is a version worth paying attention to and using for existing PHP developers and developers who are about to join the PHP community.

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