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初步介绍PHP扩展开发经验分享

Jun 13, 2016 am 11:58 AM
centos php introduce share Establish develop Expand environment experience

环境:PHP 5.2.14 CentOS 5.5

第一步:建立扩展骨架

cd php-5.2.14/ext
./ext_skel –extname=laiwenhui

第二步:修改编译参数

cd php-5.2.14/ext/laiwenhui
vi config.m4

去掉

PHP_ARG_ENABLE(laiwenhui, whether to enable laiwenhui support,

[ --enable-laiwenhui Enable laiwenhui support])

两行前面的dnl

修改后为:

复制代码 代码如下:


dnl Otherwise use enable:
PHP_ARG_ENABLE(laiwenhui, whether to enable laiwenhui support,
dnl Make sure that the comment is aligned:
[ --enable-laiwenhui Enable laiwenhui support])



第三步:编写代码

vim php_laiwenhui.h

在 PHP_FUNCTION(confirm_laiwenhui_compiled); 后面新增一行:PHP_FUNCTION(test);

添加后为:

PHP_FUNCTION(confirm_laiwenhui_compiled); /* For testing, remove later. */
PHP_FUNCTION(test);

然后

vim laiwenhui.c

在PHP_FE(confirm_laiwenhui_compiled, NULL) 后面添加 PHP_FE(test, NULL)

添加后为:

复制代码 代码如下:


zend_function_entry laiwenhui_functions[] = {
PHP_FE(confirm_laiwenhui_compiled, NULL) /* For testing, remove later. */
PHP_FE(test, NULL) /* For testing, remove later. */
{NULL, NULL, NULL} /* Must be the last line in laiwenhui_functions[] */
};


在文件最后面增加如下代码:

复制代码 代码如下:


PHP_FUNCTION(test)
{
char *arg = “This my first extention!”;
int len;
char *strg;
len = spprintf(&strg, 0, “%s\n”, arg);
RETURN_STRINGL(strg, len, 0);
}


第四步:编译代码

复制代码 代码如下:


cd php-5.2.6/ext/laiwenhui
/opt/module/php/bin/phpize
./configure –with-php-config=/opt/module/php/bin/php-config
make
make install


我的PHP安装路径为:/opt/module/php
这个时候会生成一个文件 /opt/module/php/lib/php/extensions/no-debug-non-zts-20060613/laiwenhui.so

编辑PHP配置文件php.ini,添加扩展:

vim php.ini

在[PHP]模块下增加:extension = laiwenhui.so

;extension=php_zip.dll
extension = laiwenhui.so

把php.ini 文件中的 extension_dir 修改为该目录:
extension_dir = “/usr/local/php/lib/php/extensions/no-debug-non-zts-20060613/”

; Directory in which the loadable extensions (modules) reside.
extension_dir = “/opt/module/php/lib/php/extensions/no-debug-non-zts-20060613/”

第五步:检查安装结果

1. 重启apache或者php-fpm
2. /opt/module/php/bin/php -m 看下是否有包含laiwenhui扩展。
第六步:执行测试代码

在网站根目录创建test.php

vim test.php

代码内容如下

echo test();
?>

执行后结果为:This my first extention!

如果你能顺利完成以上几步,恭喜你完成了第一个扩展。

以上是扩展PHP的简单步骤,更多请参考:
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