Home Backend Development PHP Tutorial 用C开发PHP扩张初探

用C开发PHP扩张初探

Jun 13, 2016 pm 01:26 PM
ext int nbsp php

用C开发PHP扩展初探

        学习PHP快2年了,对于PHP的有些东西还没有弄透,今天趁着周末学习了一下如何用C语言开发PHP扩展

        函数功能:php里面的整数是有符号数,其内部实现其实就是long,不是unsigned long。对于32位机器来说,php最大能表示的整数就是2^31-1了,一般在应用中碰到大于2^31-1而小于2^32的数就只能用字符串来表示了。对于mixed int_ext(string in)来说,如果字符串in表示的整数小于2^31-1,那么就返回整数,如果大于就返回字符串。

      开发扩展步骤如下:(首先需要下载php的源码,这里下载的是php-5.3.14)

    1,建立扩展骨架      

    2,修改编译参数

去掉  PHP_ARG_ENABLE(int_ext, whether to enable int_ext support  和 
[ --enable-int_ext Enable int_ext support])  两行前面的dnl  修改后为:

    3,编写C代码

核心代码:

此时会产生一个so文件:  /usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/int_ext.so

修改php.ini 添加扩展extension_dir = "/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/"

[int_ext]

extension = int_ext.so

   5,测试

结果输出:






Copy after login
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot Article

Hot Article

Hot Article Tags

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian Dec 24, 2024 pm 04:42 PM

PHP 8.4 Installation and Upgrade guide for Ubuntu and Debian

CakePHP Date and Time CakePHP Date and Time Sep 10, 2024 pm 05:27 PM

CakePHP Date and Time

CakePHP File upload CakePHP File upload Sep 10, 2024 pm 05:27 PM

CakePHP File upload

CakePHP Routing CakePHP Routing Sep 10, 2024 pm 05:25 PM

CakePHP Routing

Discuss CakePHP Discuss CakePHP Sep 10, 2024 pm 05:28 PM

Discuss CakePHP

CakePHP Quick Guide CakePHP Quick Guide Sep 10, 2024 pm 05:27 PM

CakePHP Quick Guide

CakePHP Project Configuration CakePHP Project Configuration Sep 10, 2024 pm 05:25 PM

CakePHP Project Configuration

How To Set Up Visual Studio Code (VS Code) for PHP Development How To Set Up Visual Studio Code (VS Code) for PHP Development Dec 20, 2024 am 11:31 AM

How To Set Up Visual Studio Code (VS Code) for PHP Development

See all articles