What performance improvements does php8 have?

The improved performance of php8 includes: 1. Introduction of JIT compiler; 2. Optimization of function calls; 3. Improvement of garbage collection mechanism; 4. Improvement of type system; 5. New language features; 6 , Optimize string processing; 7. Improve array processing; 8. Introduce a new memory management mechanism; 9. Optimize code generation. Detailed introduction: 1. The introduction of the JIT compiler. PHP8 introduces the JIT compiler, which is a dynamic compilation technology that can convert PHP code into machine code for more efficient execution; 2. Optimization of function calls, etc.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

PHP 8 has done a lot of work in terms of performance improvement. The following are some of the main aspects:

1. Introduction of JIT compiler: PHP 8 introduced JIT Compiler, a dynamic compilation technology that converts PHP code into machine code for more efficient execution. The traditional PHP interpreter interprets the execution code line by line, while the JIT compiler can compile the hot code into machine code at runtime, thus improving the execution speed. This means that in some cases, PHP 8 can be several times faster than previous versions.

2. Optimization of function calls: In PHP 8, by introducing the inline cache (IC) mechanism of function calls, the overhead of function calls can be avoided. The IC mechanism caches the internal information of the function when it is called for the first time so that it can be used directly in subsequent calls, thus improving the performance of function calls.

3. Improvement of the garbage collection mechanism: PHP 8 has optimized the garbage collection mechanism, reducing memory consumption and memory leaks. This enables applications to handle large amounts of data and requests more efficiently.

4. Type system improvements: PHP 8 enhances the type system, supports more type declarations, and improves the performance of type checking. This improves the readability, maintainability, and robustness of your code and reduces the likelihood of runtime errors.

5. New language features: PHP 8 adds some new language features, such as named parameters, union types, anonymous classes, etc. These features can make the code more concise and easier to read. And maintenance. At the same time, these new features can also improve code execution efficiency.

6. Optimize string processing: PHP 8 has optimized string processing, including string concatenation, length calculation, interception and other operations. These optimizations can improve the performance of string processing and reduce unnecessary memory consumption.

7. Improved array processing: PHP 8 has optimized array processing, including array creation, access, deletion and other operations. These optimizations can improve the performance of array processing, allowing applications to process large amounts of data more efficiently.

8. Introducing a new memory management mechanism: PHP 8 introduces a new memory management mechanism, including the combined use of reference counting and garbage collection. This mechanism can manage memory more effectively, reduce memory leaks and memory consumption, and improve application performance and stability.

9. Optimize code generation: PHP 8 reduces unnecessary memory consumption by optimizing code generation. For example, just-in-time compilation (JIT) technology is used to convert PHP code into machine code, thereby increasing execution speed.

To sum up, PHP 8 has done a lot of work in terms of performance improvement, including introducing a JIT compiler, optimizing function calls, improving garbage collection mechanism, enhancing the type system, introducing new language features, and optimizing strings. processing, improving array handling, introducing new memory management mechanisms, and optimizing code generation. These improvements enable PHP 8 to better cope with the needs of modern web development, improving development efficiency and application stability.

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