C语言PHP的helloworld扩展
1、下载php源码
wget http://cn2.php.net/distributions/php-5.6.10.tar.gz tar -zxvf php-5.6.10.tar.gz
2、建立扩展开发框架 ./ext_skel --extname=helloworld
cd php-5.6.10/ext/ ./ext_skel --extname=helloworld Creating directory helloworld Creating basic files: config.m4 config.w32 .gitignore helloworld.c php_helloworld.h CREDITS EXPERIMENTAL tests/001.phpt helloworld.php [done]. To use your new extension, you will have to execute the following steps: 1. $ cd .. 2. $ vi ext/helloworld/config.m4 3. $ ./buildconf 4. $ ./configure --[with|enable]-helloworld 5. $ make 6. $ ./sapi/cli/php -f ext/helloworld/helloworld.php 7. $ vi ext/helloworld/helloworld.c 8. $ make Repeat steps 3-6 until you are satisfied with ext/helloworld/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.
3、进入php源码的根目录， 编辑文件 vim ext/helloworld/config.m4
去掉这几行代码前面的dnl
PHP_ARG_ENABLE(helloworld, whether to enable helloworld support, Make sure that the comment is aligned: [ --enable-helloworld Enable helloworld support])
4、在php源码根目录执行命令 ./buildconf --force
Forcing buildconf Removing configure caches buildconf: checking installation... buildconf: autoconf version 2.69 (ok) rebuilding configure rebuilding main/php_config.h.in
5、在php源码的根目录编译php程序，注意命令为 ./configure --with-helloworld
configure: WARNING: unrecognized options: --with-helloworld checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for a sed that does not truncate output... /bin/sed checking build system type... x86_64-unknown-linux-gnu checking host system type... x86_64-unknown-linux-gnu checking target system type... x86_64-unknown-linux-gnu checking for cc... cc checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether cc accepts -g... yes checking for cc option to accept ISO C89... none needed checking how to run the C preprocessor... cc -E checking for icc... no checking for suncc... no ...... 最后出现的error，没有处理 configure: error: xml2-config not found. Please check your libxml2 installation.
6、. 进入我们的扩展目录helloworld，执行命令 phpize（通过 sudo apt-get install php5-dev 安装 phpize），此时你的扩展目录会生成很多文件，可以用于后期编译。
cd php-5.6.10/ext/helloworld phpize Configuring for: PHP Api Version: 20121113 Zend Module Api No: 20121212 Zend Extension Api No: 220121212
7、在helloworld目录编译我们的扩展 ./configure --with-php-config=/usr/bin/php-config（使用你自己环境的php-config） --enable-helloworld
你可以通过一条命令查找你的php-config文件的位置（find / -name php-config）如下：我的地址为/usr/bin/php-config
./configure --with-php-config=/usr/bin/php-config checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for a sed that does not truncate output... /bin/sed checking for cc... cc checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether cc accepts -g... yes checking for cc option to accept ISO C89... none needed checking how to run the C preprocessor... cc -E checking for icc... no checking for suncc... no checking whether cc understands -c and -o together... yes checking for system library directory... lib checking if compiler supports -R... no ......
8、进入扩展helloworld目录，编辑文件php_helloworld.h，在最后一行添加函数PHP_FUNCTION(helloworldTest);
PHP_FUNCTION(helloworldTest);
9、用vim 打开helloword.c,在helloworld.c中实现我们的函数,之后 将helloworldTest函数加入到helloworld_functions[]中，保存退出
PHP_FUNCTION(helloworldTest)
{
RETURN_STRING("Hello World !", 1);
}
const zend_function_entry helloworld_functions[] = {
PHP_FE(confirm_helloworld_compiled, NULL) /* For testing, remove later. */
PHP_FE(helloworldTest, NULL)
PHP_FE_END /* Must be the last line in helloworld_functions[] */
};
10、执行make命令 make 编译扩展，我在运行的过程中还是比较顺利的。如果出现错误，请认真看前面步骤是否有错，我在第一遍做的时候也有错一般都是前面步骤有问题。
/bin/bash /php/php-5.6.10/ext/helloworld/libtool --mode=compile cc -I. -I/php/php-5.6.10/ext/helloworld -DPHP_ATOM_INC -I/php/php-5.6.10/ext/helloworld/include -I/php/php-5.6.10/ext/helloworld/main -I/php/php-5.6.10/ext/helloworld -I/usr/include/php5 -I/usr/include/php5/main -I/usr/include/php5/TSRM -I/usr/include/php5/Zend -I/usr/include/php5/ext -I/usr/include/php5/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /php/php-5.6.10/ext/helloworld/helloworld.c -o helloworld.lo libtool: compile: cc -I. -I/php/php-5.6.10/ext/helloworld -DPHP_ATOM_INC -I/php/php-5.6.10/ext/helloworld/include -I/php/php-5.6.10/ext/helloworld/main -I/php/php-5.6.10/ext/helloworld -I/usr/include/php5 -I/usr/include/php5/main -I/usr/include/php5/TSRM -I/usr/include/php5/Zend -I/usr/include/php5/ext -I/usr/include/php5/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /php/php-5.6.10/ext/helloworld/helloworld.c -fPIC -DPIC -o .libs/helloworld.o /bin/bash /php/php-5.6.10/ext/helloworld/libtool --mode=link cc -DPHP_ATOM_INC -I/php/php-5.6.10/ext/helloworld/include -I/php/php-5.6.10/ext/helloworld/main -I/php/php-5.6.10/ext/helloworld -I/usr/include/php5 -I/usr/include/php5/main -I/usr/include/php5/TSRM -I/usr/include/php5/Zend -I/usr/include/php5/ext -I/usr/include/php5/ext/date/lib -DHAVE_CONFIG_H -g -O2 -o helloworld.la -export-dynamic -avoid-version -prefer-pic -module -rpath /php/php-5.6.10/ext/helloworld/modules helloworld.lo libtool: link: cc -shared -fPIC -DPIC .libs/helloworld.o -O2 -Wl,-soname -Wl,helloworld.so -o .libs/helloworld.so libtool: link: ( cd ".libs" && rm -f "helloworld.la" && ln -s "../helloworld.la" "helloworld.la" ) /bin/bash /php/php-5.6.10/ext/helloworld/libtool --mode=install cp ./helloworld.la /php/php-5.6.10/ext/helloworld/modules libtool: install: cp ./.libs/helloworld.so /php/php-5.6.10/ext/helloworld/modules/helloworld.so libtool: install: cp ./.libs/helloworld.lai /php/php-5.6.10/ext/helloworld/modules/helloworld.la libtool: finish: PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/go/bin:/sbin" ldconfig -n /php/php-5.6.10/ext/helloworld/modules ---------------------------------------------------------------------- Libraries have been installed in: /php/php-5.6.10/ext/helloworld/modules If you ever happen to want to link against installed libraries in a given directory, LIBDIR, you must either use libtool, and specify the full pathname of the library, or use the `-LLIBDIR' flag during linking and do at least one of the following: - add LIBDIR to the `LD_LIBRARY_PATH' environment variable during execution - add LIBDIR to the `LD_RUN_PATH' environment variable during linking - use the `-Wl,-rpath -Wl,LIBDIR' linker flag - have your system administrator add LIBDIR to `/etc/ld.so.conf' See any operating system documentation about shared libraries for more information, such as the ld(1) and ld.so(8) manual pages. ---------------------------------------------------------------------- Build complete. Don't forget to run 'make test'.
11、安装php
apt-get install php5 php5-gd php5-cli
11、将编译生成的helloworld.so 文件复制到你本机的php扩展目录
创建：info.php 内容：phpinfo(); php info.php | grep exten extension_dir => /usr/lib/php5/20121212 => /usr/lib/php5/20121212 mbstring extension makes use of "streamable kanji code filter and converter", which is distributed under the GNU Lesser General Public License version 2.1. root@4ccdc77255ea:/php/php-5.6.10/ext/helloworld# cp modules/helloworld.so /usr/lib/php5/20121212/
12、配置php.ini 开启 helloworld.so 扩展
php info.php | grep php.ini Loaded Configuration File => /etc/php5/cli/php.ini root@4ccdc77255ea:/php# vim /etc/php5/cli/ conf.d/ php.ini
13、创建echo.php
<?php print_r(helloworldTest()); 结果：Hello World !
14、Docker中遇到的问题
1. apt-get install autoconf 2. gcc make等依赖包安装