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Performance improvements of the JIT compiler in PHP8.0

王林

May 14, 2023 pm 06:10 PM

phpPerformance improvementsjit compiler

With the development of modern technology, computer processing speed requirements are getting higher and higher, and programmers are constantly exploring ways to improve program performance. As a widely used programming language, PHP has also added a JIT compiler in its continuous optimization and upgrading. This move plays an important role in exploring ways to improve PHP performance.

What is a JIT compiler?

First of all, let’s understand what a JIT compiler is. JIT (Just-In-Time) compiler, which is a compiler that can dynamically generate code while the program is running. Unlike the static compiler, the JIT compiler does not compile all the code of the program into machine code at once when the program starts. Instead, it generates the corresponding machine code when the code block that needs to be run is executed.

Specifically, when the PHP code is executed, the JIT compiler will compile some lower-performance parts into machine code, thereby improving program efficiency and reducing CPU workload.

The impact of JIT compiler on PHP

PHP is an interpreted language, which means that every time the code is executed, the source code needs to be translated into instructions that can be read by the computer. This translation process requires a lot of computing resources. The JIT compiler can compile frequently executed code blocks into machine instructions, thereby speeding up the running speed of the entire program.

Let us take a look at the specific performance improvement effect of the JIT compiler in PHP8.0:

Faster code execution speed

The JIT compiler can quickly compile blocks of code into machine instructions, and these instructions are run directly on the computer, so the execution speed is faster than traditional interpretation execution methods.

Lower memory overhead

Since the JIT compiler only retains necessary variables and data when executing code, and discards unnecessary data, it can Reduce memory overhead and improve overall program and server performance.

Better user experience

The performance improvement of the program will make the user experience better. For example, in a highly concurrent Web program, the use of the JIT compiler can allow the program to process requests faster, reduce waiting time, and allow users to use the Web program more smoothly.

Summary

The use of JIT compiler is an important innovation in PHP development. It can improve the running efficiency of the program, reduce memory overhead, and provide basic guarantee for a good user experience. At present, the JIT compiler of PHP8.0 has been widely used, providing a new idea and direction for the exploration of performance improvement of the PHP programming language.

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