What has been optimized in php7

php7 has been optimized: 1. PHP7 introduces a new Zend engine called Zend Engine 3.0; 2. PHP7 provides better memory management, reducing the cost of memory leaks and garbage collection; 3. PHP7 also introduces new language features to improve the readability and security of the code; 4. PHP7 also improves the error handling mechanism, which can capture and handle fatal errors without aborting code execution; 5. PHP7 improves the underlying library by improving and interaction between modules to improve performance.

The operating environment of this tutorial: windows10 system, php8.1.3 version, DELL G3 computer.

PHP is a commonly used server-side scripting language used to develop web applications. PHP7 is the latest version of PHP and brings many optimizations and improvements. This article will introduce several key points of PHP7 optimization.

1. PHP7 introduces a new Zend engine called Zend Engine 3.0. This new engine improves the efficiency of parsing and executing PHP code by improving internal data structures and algorithms. Compared with previous versions, PHP7 can execute code faster and reduce the load on the server when handling large applications.

2. PHP7 provides better memory management. PHP7 introduces a new memory allocator called jemalloc. jemalloc is more efficient than the built-in allocator in PHP5, reducing the overhead of memory allocation and release. This means that in PHP7, applications can better manage memory, reducing memory leaks and garbage collection costs.

3. PHP7 also introduces new language features, such as scalar type declaration and return type declaration. Scalar type declarations allow developers to specify the type of a parameter, such as an integer, string, or floating point number, in function and method parameters. A return type declaration specifies the return value type of a function or method. These type declarations can improve code readability and safety, and can help developers catch potential errors while coding.

4. PHP7 also improves the error handling mechanism. Previous versions of PHP would throw a fatal error and abort code execution when encountering a serious error, causing the entire application to crash. PHP7 introduces a new error handler called the Throwable interface, which can capture and handle fatal errors without aborting code execution. This allows developers to better handle errors and take appropriate steps to fix the problem rather than letting the application crash.

5. PHP7 improves performance by improving the interaction between underlying libraries and modules. For example, PHP7 introduced a new file I/O API, named Fileinfo. Fileinfo provides faster and more accurate file type detection and metadata extraction. In addition, PHP7 also improves the performance of various extensions and modules, such as MySQL extensions and string processing functions.

In short, PHP7 has improved the performance and efficiency of PHP applications by introducing the new Zend engine, improving memory management, providing new language features and error handling mechanisms, and improving the performance of underlying libraries and modules. Significant improvement. Developers can benefit from these optimizations to improve application performance, reduce server load, and provide a better user experience .

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