Master C++ development skills and develop high-performance PHP7/8 extensions

Master C development skills and develop efficient PHP7/8 extensions

PHP is a widely used scripting language, especially suitable for Web development. In order to improve the execution efficiency of PHP, we can achieve this by developing C extensions.

This article will introduce how to master C development skills and develop a high-performance PHP7/8 extension. We'll illustrate each step with sample code.

Step 1: Install the development environment
First, we need to install the C development environment. In a Linux environment, you can use the following command to install:

sudo apt-get install build-essential

Step 2: Write C extension code
Next, we will write the C extension code. Suppose we want to develop an extension that calculates the sum of two integers.

First, create a file named sum.cpp and write the following code:

#include <php.h>

// 定义一个函数，计算两个整数之和
PHP_FUNCTION(sum)
{
    long num1, num2, sum;
    
    // 获取传入的参数
    if (zend_parse_parameters(ZEND_NUM_ARGS(), "ll", &num1, &num2) == FAILURE) {
        RETURN_NULL();
    }
    
    // 计算两个整数之和
    sum = num1 + num2;
    
    // 返回计算结果
    RETURN_LONG(sum);
}

// 注册扩展函数
zend_function_entry sum_functions[] = {
    PHP_FE(sum, NULL)
    PHP_FE_END
};

// 定义扩展信息
zend_module_entry sum_module_entry = {
    STANDARD_MODULE_HEADER,
    "sum",                     // 扩展名称
    sum_functions,             // 扩展函数
    NULL,                      // MINIT函数
    NULL,                      // MSHUTDOWN函数
    NULL,                      //RINIT函数
    NULL,                      //RSHUTDOWN函数
    NULL,                      // MINFO函数
    "1.0",                     // 扩展版本
    STANDARD_MODULE_PROPERTIES
};

// 初始化扩展
ZEND_GET_MODULE(sum)

Step 3: Write the extended configuration file
Create a file named sum.ini, And write the following code:

extension=sum.so

Step 4: Compile the extension
In the terminal, use the following command to compile the extension:

phpize
./configure
make
sudo make install

Step 5: Test the extension
Create a file called test .php file and write the following code:

<?php
echo sum(3, 5);  // 输出8
?>

In the terminal, run the test.php file using the following command:

php test.php

If the output is 8, the extension has run successfully.

Through the above steps, we have successfully developed a high-performance PHP7/8 extension. By mastering C development skills, we can develop more powerful extensions and improve the execution efficiency of PHP.

Summary
This article introduces how to master C development skills and develop high-performance PHP7/8 extensions. We demonstrate each step with example code and show an extension of how to calculate the sum of two integers.

I hope this article can bring some help to beginners, so that everyone can better develop PHP extensions and improve the execution efficiency of PHP.

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