1、下载PHP源码，解压，我的解压目录是：/root/lamp/php-5.5.37
2、cd到/root/lamp/php-5.5.37/ext目录下，创建文件test_extension.def文件
int a(int x, int y)string b(string str, int n)
3、通过扩展框架生成器生成框架目录：
ext_skel –extname=test_extension –proto=test_extension.def
生成成功结果如下：
Creating directory test_extension awk: /root/lamp/php-5.5.37/ext/skeleton/create_stubs:56: warning: escape sequence `\|' treated as plain `|' Creating basic files: config.m4 config.w32 .svnignore test_extension.c php_test_extension.h CREDITS EXPERIMENTAL tests/001.phpt test_extension. php [done].To use your new extension, you will have to execute the following steps: 1. $ cd .. 2. $ vi ext/test_extension/config.m4 3. $ ./buildconf 4. $ ./configure --[with|enable]-test_extension 5. $ make 6. $ ./sapi/cli/php -f ext/test_extension/test_extension.php 7. $ vi ext/test_extension/test_extension.c 8. $ make Repeat steps 3-6 until you are satisfied with ext/test_extension/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.
4、切换到生成的框架目录下：cd test_extension
5、修改配置文件config.m4，去掉10、11、12行前面的dnl，如下
PHP_ARG_WITH(test_extension, for test_extension support, Make sure that the comment is aligned: [ --with-test_extension Include test_extension support])
6、实现函数a和b的功能，vi test_extension.c，修改后函数a、b如下
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PHP_FUNCTION(a)
{
int argc = ZEND_NUM_ARGS();
long x;
long y;
if (zend_parse_parameters(argc TSRMLS_CC, "ll", &x, &y) == FAILURE)
{
php_error(E_WARNING, "zend_parse_parameters failure!");
return;
}
RETURN_LONG(x + y);
}
PHP_FUNCTION(b)
{
char *str = NULL;
int argc = ZEND_NUM_ARGS();
int str_len;
long n;
char *result;
char *ptr;
int result_length;
if (zend_parse_parameters(argc TSRMLS_CC, "sl", &str, &str_len, &n) == FAILURE)
{
php_error(E_WARNING, "zend_parse_parameters failure!");
return;
}
result_length = str_len * n;
result = (char *) emalloc(result_length + 1);
ptr = result; while (n--) {
memcpy(ptr, str, str_len);
ptr += str_len;
}
*ptr = '/0';
RETURN_STRINGL(result, result_length, 0);
}7、test_extension目录下执行：/usr/local/bin/phpize
Configuring for: PHP Api Version: 20121113Zend Module Api No: 20121212Zend Extension Api No: 220121212
8、配置：./configure –with-php-config=/usr/local/bin/php-config
9、编译：make
10、安装：make install
安装完成后/usr/local/lib/php/extensions/no-debug-zts-20121212/下会生成test_extension.so
11、修改php.in，加上：extension=test_extension.so
