如何制作一个php扩展

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一、安装php
假如把php安装/usr/local/php下

二、php扩展框架工具
进入 /php源码/ext 目录
执行
./ext_skel --extname=my_module
显示结果
Creating basic files: config.m4 config.w32 .svnignore my_module.c php_my_module.h CREDITS EXPERIMENTAL tests/001.phpt my_module.php [done].

To use your new extension, you will have to execute the following steps:

1. $ cd ..
2. $ vi ext/my_module/config.m4
3. $ ./buildconf
4. $ ./configure --[with|enable]-my_module
5. $ make
6. $ ./sapi/cli/php -f ext/my_module/my_module.php
7. $ vi ext/my_module/my_module.c
8. $ make

Repeat steps 3-6 until you are satisfied with ext/my_module/config.m4 and
step 6 confirms that your module is compiled into PHP. Then, start writing
code and repeat the last two steps as often as necessary.

其实这里就教了你怎么操作了

在当前目录再执行 cd my_module/ 进入我们的模块目录
然后我们要修改文件顺序是
configue.m4
my_module.c
php_my_module.h
修改configue.m4
根据你自己的选择将
dnl PHP_ARG_WITH(my_module, for my_module support,

dnl Make sure that the comment is aligned:
dnl [ --with-my_module Include my_module support])

修改成
PHP_ARG_WITH(my_module, for my_module support,

Make sure that the comment is aligned:
[ --with-my_module Include my_module support])

或者将
dnl PHP_ARG_ENABLE(my_module, whether to enable my_module support,

dnl Make sure that the comment is aligned:
dnl [ --enable-my_module Enable my_module support])

修改成
PHP_ARG_ENABLE(my_module, whether to enable my_module support,

Make sure that the comment is aligned:

[ --enable-my_module Enable my_module support])

其实就是去掉前面的dnl

修改my_module.c

将文件其中的下列代码进行修改

/* Every user visible function must have an entry in my_module_functions[].

*/
function_entry my_module_functions[] = {
PHP_FE(say_hello, NULL) /* ?添加着一行代码 */

PHP_FE(confirm_my_module_compiled, NULL) /* For testing, remove later. */

{NULL, NULL, NULL} /* Must be the last line in my_module_functions[] */

};
在文件的最后添加下列代码
PHP_FUNCTION(say_hello)
{
zend_printf("hello world/n");

}

修改php_my_module.h
在PHP_FUNCTION(confirm_my_module_compiled ); /* For testing, remove later. */
添加一行：
PHP_FUNCTION(say_hello); /* For testing, remove later. */

三、执行
/usr/local/php/bin/phpize

四、编译安装扩展
然后执行./configure --enable-my_module --with-php-config=/usr/local/php/bin/php-config