PHP7新建扩展

Jun 20, 2016 pm 12:33 PM

1、你已经配置过PHP7的开发环境。

1.1 检查centos安装源

yum list installed | grep php
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有则删除旧的:

 yum remove php*
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1.2 添加新的安装源

# CentOS 5.Xrpm -Uvh http://mirror.webtatic.com/yum/el5/latest.rpm# CentOs 6.xrpm -Uvh http://mirror.webtatic.com/yum/el6/latest.rpm# CentOs 7.Xrpm -Uvh https://mirror.webtatic.com/yum/el7/epel-release.rpmrpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
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想要删除上面的安装包:

rpm -qa | grep webstatic
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1.3 安装PHP开发环境

 yum install php70w.x86_64 php70w-cli.x86_64 php70w-common.x86_64 php70w-devel.x86_64
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2、下载一份对应版本的PHP源代码

cd php_src/ext/./ext_skel --extname=hello
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进入源代码的ext目录,并新建一个hello的插件;extname参数的值就是扩展名称。执行ext_skel命令后,这样在当前目录下会生成一个与扩展名一样的目录。

3、修改config.m4配置文件

cd hellovim config.m4
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打开,config.m4文件后,你会发现以下内容

dnl If your extension references something external, use with:    dnl PHP_ARG_WITH(say, for say support, dnl Make sure that the comment is aligned: dnl [  --with-say             Include say support])  dnl Otherwise use enable:  dnl PHP_ARG_ENABLE(say, whether to enable say support, dnl Make sure that the comment is aligned: dnl [  --enable-say           Enable say support])
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其中,dnl 是注释符号。

上面的代码说,如果你所编写的扩展如果依赖其它的扩展或者lib库,需要去掉PHP_ARG_WITH相关代码的注释。

否则,去掉 PHP_ARG_ENABLE 相关代码段的注释。我们编写的扩展不需要依赖其他的扩展和lib库。因此,我们去掉PHP_ARG_ENABLE前面的注释。

去掉注释后的代码如下:

dnl If your extension references something external, use with:    dnl PHP_ARG_WITH(say, for say support, dnl Make sure that the comment is aligned: dnl [  --with-say             Include say support])  dnl Otherwise use enable:  PHP_ARG_ENABLE(say, whether to enable say support, Make sure that the comment is aligned: [  --enable-say           Enable say support])
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4、修改代码

修改 hello.c 文件,实现 hello() 函数;找到 PHP_FUNCTION(confirm_hello_compiled) 在上面添加以下内容:

PHP_FUNCTION(hello){        zend_string *strg;        strg = strpprintf(0, "hello word,dingdayu");        RETURN_STR(strg);}
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PHP_FUNCTION 为定义PHP内部函数括号里面的为函数名,然后再使用下面的修改将函数公开到插件外部。

找到 PHP_FE(confirm_hello_compiled 在上面增加如下代码:

PHP_FE(hello, NULL)
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即修改后效果:

const zend_function_entry hello_functions[] = {     PHP_FE(hello, NULL)       /* For testing, remove later. */     PHP_FE(confirm_hello_compiled,    NULL)       /* For testing, remove later. */     PHP_FE_END  /* Must be the last line in say_functions[] */ }; /* }}} */
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其中上面的代码中“confirm_hello_compiled”为测试函数,可在实际项目中删除

5、编译

phpize./configuremakemake test# 会提醒输入邮箱make install# 会提示编译后输入的目录 目测:/lib64/php/modules/hello.so
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6、添加配置

[hello]extension = hello.so
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7、测试效果

你可以使用 “php -m”查看加载扩展,不过这里请注意,如果php-cli命令和web php的配置文件不是同一个配置文件,则可能会出现差错,推荐先通过phpinfo();查看web php配置文件,然后使用“php --ini”查看php-cli配置文件。

楼主web的php-fpm是编译的,php-cli是通过yum安装的,所以不同。

/etc/php.ini/usr/local/php7/etc/php.ini
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