使用宏ZEND_BEGIN_ARG_INFO和ZEND_END_ARG_INFO定义参数信息
参数信息是函数所必要部分，这里不做深究，直接给出相应代码：
1 ZEND_BEGIN_ARG_INFO(arginfo_say_hello_func, 0)
2 ZEND_END_ARG_INFO()
2 ZEND_END_ARG_INFO()
如需了解具体信息请阅读相关宏定义。
使用宏PHP_FE将函数加入到say_hello_functions中
最后，我们需要将刚才定义的函数和参数信息加入到say_hello_functions数组里，代码如下：
1 const zend_function_entry say_hello_functions[] = {
2 PHP_FE(say_hello_func, arginfo_say_hello_func)
3 {NULL, NULL, NULL}
4 };
2 PHP_FE(say_hello_func, arginfo_say_hello_func)
3 {NULL, NULL, NULL}
4 };
这一步就是通过PHP_EF宏实现，注意这个数组最后一行必须是{NULL, NULL, NULL} ，请不要删除。
下面是编写完成后的say_hello.c全部代码：
/*
002 +----------------------------------------------------------------------+
003 | PHP Version 5 |
004 +----------------------------------------------------------------------+
005 | Copyright (c) 1997-2010 The PHP Group |
006 +----------------------------------------------------------------------+
007 | This source file is subject to version 3.01 of the PHP license, |
008 | that is bundled with this package in the file LICENSE, and is |
009 | available through the world-wide-web at the following url: |
010 | http://www.php.net/license/3_01.txt |
011 | If you did not receive a copy of the PHP license and are unable to |
012 | obtain it through the world-wide-web, please send a note to |
013 | license@php.net so we can mail you a copy immediately. |
014 +----------------------------------------------------------------------+
015 | Author: |
016 +----------------------------------------------------------------------+
017 */
018
019 /* $Id: header 297205 2010-03-30 21:09:07Z johannes $ */
020
021 #ifdef HAVE_CONFIG_H
022 #include "config.h"
023 #endif
024
025 #include "php.h"
026 #include "php_ini.h"
027 #include "ext/standard/info.h"
028 #include "php_say_hello.h"
029
030 /* If you declare any globals in php_say_hello.h uncomment this:
031 ZEND_DECLARE_MODULE_GLOBALS(say_hello)
032 */
033
034 /* True global resources - no need for thread safety here */
035 static int le_say_hello;
036
037 /* {{{ PHP_FUNCTION
038 */
039 PHP_FUNCTION(say_hello_func)
040 {
041 char *name;
042 int name_len;
043
044 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &name, &name_len) == FAILURE)
045 {
046 return;
047 }
048 php_printf("Hello %s!", name);
049
050 RETURN_TRUE;
051 }
052
053 ZEND_BEGIN_ARG_INFO(arginfo_say_hello_func, 0)
054 ZEND_END_ARG_INFO()
055 /* }}} */
056
057 /* {{{ say_hello_functions[]
058 *
059 * Every user visible function must have an entry in say_hello_functions[].
060 */
061 const zend_function_entry say_hello_functions[] = {
062 PHP_FE(say_hello_func, arginfo_say_hello_func)
063 {NULL, NULL, NULL} /* Must be the last line in say_hello_functions[] */
064 };
065 /* }}} */
066
067 /* {{{ say_hello_module_entry
068 */
069 zend_module_entry say_hello_module_entry = {
070 #if ZEND_MODULE_API_NO >= 20010901
071 STANDARD_MODULE_HEADER,
072 #endif
073 "say_hello",
074 say_hello_functions,
075 NULL,
076 NULL,
077 NULL,
078 NULL,
079 PHP_MINFO(say_hello),
080 #if ZEND_MODULE_API_NO >= 20010901
081 "0.1", /* Replace with version number for your extension */
082 #endif
083 STANDARD_MODULE_PROPERTIES
084 };
085 /* }}} */
086
087 #ifdef COMPILE_DL_SAY_HELLO
088 ZEND_GET_MODULE(say_hello)
089 #endif
090
091 /* {{{ PHP_MINFO_FUNCTION
092 */
093 PHP_MINFO_FUNCTION(say_hello)
094 {
095 php_info_print_table_start();
096 php_info_print_table_header(2, "say_hello support", "enabled");
097 php_info_print_table_row(2, "author", "Zhang Yang"); /* Replace with your name */
098 php_info_print_table_end();
099
100 /* Remove comments if you have entries in php.ini
101 DISPLAY_INI_ENTRIES();
102 */
103 }
104 /* }}} */
002 +----------------------------------------------------------------------+
003 | PHP Version 5 |
004 +----------------------------------------------------------------------+
005 | Copyright (c) 1997-2010 The PHP Group |
006 +----------------------------------------------------------------------+
007 | This source file is subject to version 3.01 of the PHP license, |
008 | that is bundled with this package in the file LICENSE, and is |
009 | available through the world-wide-web at the following url: |
010 | http://www.php.net/license/3_01.txt |
011 | If you did not receive a copy of the PHP license and are unable to |
012 | obtain it through the world-wide-web, please send a note to |
013 | license@php.net so we can mail you a copy immediately. |
014 +----------------------------------------------------------------------+
015 | Author: |
016 +----------------------------------------------------------------------+
017 */
018
019 /* $Id: header 297205 2010-03-30 21:09:07Z johannes $ */
020
021 #ifdef HAVE_CONFIG_H
022 #include "config.h"
023 #endif
024
025 #include "php.h"
026 #include "php_ini.h"
027 #include "ext/standard/info.h"
028 #include "php_say_hello.h"
029
030 /* If you declare any globals in php_say_hello.h uncomment this:
031 ZEND_DECLARE_MODULE_GLOBALS(say_hello)
032 */
033
034 /* True global resources - no need for thread safety here */
035 static int le_say_hello;
036
037 /* {{{ PHP_FUNCTION
038 */
039 PHP_FUNCTION(say_hello_func)
040 {
041 char *name;
042 int name_len;
043
044 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "s", &name, &name_len) == FAILURE)
045 {
046 return;
047 }
048 php_printf("Hello %s!", name);
049
050 RETURN_TRUE;
051 }
052
053 ZEND_BEGIN_ARG_INFO(arginfo_say_hello_func, 0)
054 ZEND_END_ARG_INFO()
055 /* }}} */
056
057 /* {{{ say_hello_functions[]
058 *
059 * Every user visible function must have an entry in say_hello_functions[].
060 */
061 const zend_function_entry say_hello_functions[] = {
062 PHP_FE(say_hello_func, arginfo_say_hello_func)
063 {NULL, NULL, NULL} /* Must be the last line in say_hello_functions[] */
064 };
065 /* }}} */
066
067 /* {{{ say_hello_module_entry
068 */
069 zend_module_entry say_hello_module_entry = {
070 #if ZEND_MODULE_API_NO >= 20010901
071 STANDARD_MODULE_HEADER,
072 #endif
073 "say_hello",
074 say_hello_functions,
075 NULL,
076 NULL,
077 NULL,
078 NULL,
079 PHP_MINFO(say_hello),
080 #if ZEND_MODULE_API_NO >= 20010901
081 "0.1", /* Replace with version number for your extension */
082 #endif
083 STANDARD_MODULE_PROPERTIES
084 };
085 /* }}} */
086
087 #ifdef COMPILE_DL_SAY_HELLO
088 ZEND_GET_MODULE(say_hello)
089 #endif
090
091 /* {{{ PHP_MINFO_FUNCTION
092 */
093 PHP_MINFO_FUNCTION(say_hello)
094 {
095 php_info_print_table_start();
096 php_info_print_table_header(2, "say_hello support", "enabled");
097 php_info_print_table_row(2, "author", "Zhang Yang"); /* Replace with your name */
098 php_info_print_table_end();
099
100 /* Remove comments if you have entries in php.ini
101 DISPLAY_INI_ENTRIES();
102 */
103 }
104 /* }}} */
