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How to use C++ to develop PHP7/8 extensions to enhance your website

Sep 09, 2023 am 11:58 AM
php extension c++ development Website enhancement

How to use C++ to develop PHP7/8 extensions to enhance your website

How to use C to develop PHP7/8 extensions to enhance your website

Introduction:
PHP is a popular open source scripting language that is widely used on websites development. However, PHP itself has certain limitations in its performance and functionality. In order to achieve more efficient and complex functions, we can use C to develop PHP extensions to extend the functions of PHP. This article will introduce how to use C to develop PHP7/8 extensions to enhance your website, and give code examples.

1. Set up the development environment
Before we start, we need to prepare the corresponding development environment. First, make sure that PHP7/8 version has been installed and can run normally. In addition, since we will use C to write extensions, we need to install the corresponding C compiler, such as GCC or Clang. Finally, the development header files of PHP7/8 need to be installed so that we can call PHP's API in C code.

2. Create extension files
First, we need to create a folder named "hello" to store our extension code. Go into that folder and create a file called "hello.cpp" for writing our C code. In addition, we also need a "config.m4" file to configure our extension project.

3. Write extension code
In the "hello.cpp" file, we can write our C code. First, we need to include the PHP header file and define the information about our extension.

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#include "php.h"

 

extern "C" {

    zend_module_entry hello_module_entry;

}

 

PHP_FUNCTION(hello_world) {

    php_printf("Hello, world!

");

}

 

zend_function_entry hello_functions[] = {

    PHP_FE(hello_world, NULL)

    {NULL, NULL, NULL}

};

 

zend_module_entry hello_module_entry = {

    STANDARD_MODULE_HEADER,

    "hello",

    hello_functions,

    NULL,

    NULL,

    NULL,

    NULL,

    NULL,

    "1.0",

    STANDARD_MODULE_PROPERTIES

};

 

ZEND_GET_MODULE(hello)

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The above code defines a function named "hello_world" to output "Hello, world!". We also define an array named "hello_functions" to store information about our extension functions. Finally, we define a structure named "hello_module_entry" to store information about our extension module.

4. Configure the extension project
In the "config.m4" file, we need to configure our extension project. The following is a simple configuration example:

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PHP_ARG_ENABLE(hello, whether to enable hello support,

[  --enable-hello      Enable hello support])

 

if test "$PHP_HELLO" != "no"; then

    PHP_NEW_EXTENSION(hello, hello.cpp, $ext_shared)

fi

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The above configuration file defines an option named "--enable-hello" to control whether the "hello" extension is enabled. If this option is enabled, the "PHP_NEW_EXTENSION" macro will be called to generate extension modules.

5. Compile and install the extension
After the configuration file is written, we can enter the root directory of the extension project and execute the following commands to compile and install the extension:

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phpize

./configure --enable-hello

make

sudo make install

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Execute the above After executing the command, the extension will be compiled and installed into PHP's extensions directory.

6. Test the extension
After completing the compilation and installation, we can create a simple PHP script to test whether our extension is successful. The following is a test example:

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<?php

hello_world();

?>

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Run the above PHP script. If you can see the output of "Hello, world!", it means that our extension has worked successfully.

Conclusion:
Using C to develop PHP7/8 extensions can help us enhance the functionality and performance of the website. Through the introduction of this article, we learned how to set up the development environment, create extension files, write extension code, configure extension projects, and compile and install extensions. At the same time, we also give a simple code example to demonstrate how to use C to develop PHP extensions. I hope this article is helpful to you, and welcome to continue to study and explore in depth.

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