PHP extension: from zero to hero, conquer the field of PHP extension development

First introductionPHPExtension

php editor Baicao takes you to explore the wonderful world of PHP extension development! This article will start from scratch and systematically introduce how to become a hero in PHP extension development. Whether you are a beginner or an experienced developer, you can learn about the development process and techniques of PHP extensions through this article, conquer the field of PHP extension development, and take your PHP skills to the next level!

• Add new functions or classes to PHP
• Extending PHP’s built-in data types
• Improve PHP performance
• Integrate with other languages ​​or systems

Create PHP extension

The process of creating a PHP extension includes the following steps:

1. Create a new C project.
2. Contains necessary PHP header files.
3. Define functions and classes of PHP extension modules.
4. Compile PHP extension module.
5. Load the PHP extension module into PHP.

The following is an example of a simple PHP extension module:

#include <php.h>

PHP_FUNCTioN(hello_world)
{
php_printf("Hello World!
");
}

PHP_MINIT_FUNCTION(hello_world)
{
return SUCCESS;
}

PHP_MSHUTDOWN_FUNCTION(hello_world)
{
return SUCCESS;
}

PHP_RINIT_FUNCTION(hello_world)
{
return SUCCESS;
}

PHP_RSHUTDOWN_FUNCTION(hello_world)
{
return SUCCESS;
}

zend_module_entry hello_world_module = {
STANDARD_MODULE_HEADER,
"hello_world",
NULL, /* Functions */
PHP_MINIT(hello_world),
PHP_MSHUTDOWN(hello_world),
PHP_RINIT(hello_world),
PHP_RSHUTDOWN(hello_world),
NULL, /* Info */
"0.1", /* Version */
STANDARD_MODULE_PROPERTIES
};

ZEND_GET_MODULE(hello_world)

This PHP extension module defines a function named hello_world, which prints out Hello World!String. To use this PHP extension module, you need to compile and load it into PHP. You can use the following command to compile PHP extension modules:

<?php
hello_world();
?>

troubleshooting

When developing PHP extensions, you may encounter some problems. Here are the steps to solve common problems:

1. Check your syntax. PHP extension modules are written in C, so you need to make sure your code has no syntax errors.
2. Check the names of your functions and classes. PHP extension module functions and classes must have unique names.
3. Check your header files. PHP extension modules need to include the necessary PHP header files.
4. Check your compiler settings. PHP extension modules need to be compiled with the correct compiler settings.
5. Check your PHP version. PHP extension modules need to be compatible with the version of PHP you are using.

Summarize

Hope this article can help youGet startedPHP extension development. If you want to learn more about PHP extension development, see the PHP Manual.

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