学习PHP C扩展之面向对象开发方式 (转)

PHP OOP面向对象之C语言开发方式

学习PHP C扩展有一段时间了，PHP手册里大部分讲的PHP的函数开发方式，网上找OOP资料比较少，想起上个月测试redis 的时候，下载PHP扩展redis源代码是OOP方式的。所以拿来练练手，其它不说了开始

下面要扩展的代码是 ModelHelper.php

< ?php
/**
 * 助手类，用于放置需要使用的公共函数和常量
 *
 */
class ModelHelper {
        static public function escapePage($page)
        {
            return max(1, intval($page));
        }
        /*
         * 返回基于当前时间的唯一MD5哈希值
         */
        static public function uuid()
        {
            return md5(rand());
        }
}
?>

然入 php源代码 ext\ext_skel –extname=ModelHelper 下面是进行修改的c代码

ModelHelper.c

/*
  +----------------------------------------------------------------------+
  | PHP Version 5                                                        |
  +----------------------------------------------------------------------+
  | Copyright (c) 1997-2007 The PHP Group                                |
  +----------------------------------------------------------------------+
  | This source file is subject to version 3.01 of the PHP license,      |
  | that is bundled with this package in the file LICENSE, and is        |
  | available through the world-wide-web at the following url:           |
  | http://www.php.net/license/3_01.txt                                  |
  | If you did not receive a copy of the PHP license and are unable to   |
  | obtain it through the world-wide-web, please send a note to          |
  | license@php.net so we can mail you a copy immediately.               |
  +----------------------------------------------------------------------+
  | Author:                                                              |
  +----------------------------------------------------------------------+
*/

/* $Id: header 226204 2007-01-01 19:32:10Z iliaa $ */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_ModelHelper.h"
#include "ext/standard/php_standard.h"
#include   <zend_exceptions .h>
#define MAX(a, b)  (((a)>(b))?(a):(b))

/* If you declare any globals in php_ModelHelper.h uncomment this:
ZEND_DECLARE_MODULE_GLOBALS(ModelHelper)
*/

/* True global resources - no need for thread safety here */
static int le_ModelHelper;

static zend_class_entry *ModelHelper_ce;
static zend_class_entry *ModelHelper_exception_ce;
static zend_class_entry *spl_ce_RuntimeException = NULL;

/* {{{ ModelHelper_functions[]
 *
 * Every user visible function must have an entry in ModelHelper_functions[].
 */
static zend_function_entry ModelHelper_functions[] = {
     PHP_ME(ModelHelper,escapePage, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_ALLOW_STATIC)
     PHP_ME(ModelHelper,uuid, NULL, ZEND_ACC_PUBLIC|ZEND_ACC_ALLOW_STATIC)
     /* For testing, remove later. */
    {NULL, NULL, NULL}    /* Must be the last line in ModelHelper_functions[] */
};
/* }}} */

/* {{{ ModelHelper_module_entry
 */
zend_module_entry ModelHelper_module_entry = {
#if ZEND_MODULE_API_NO >= 20010901
    STANDARD_MODULE_HEADER,
#endif
    "ModelHelper",
    ModelHelper_functions,
    PHP_MINIT(ModelHelper),
    PHP_MSHUTDOWN(ModelHelper),
    PHP_RINIT(ModelHelper),        /* Replace with NULL if there's nothing to do at request start */
    PHP_RSHUTDOWN(ModelHelper),    /* Replace with NULL if there's nothing to do at request end */
    PHP_MINFO(ModelHelper),
#if ZEND_MODULE_API_NO >= 20010901
    "0.1", /* Replace with version number for your extension */
#endif
    STANDARD_MODULE_PROPERTIES
};
/* }}} */

#ifdef COMPILE_DL_MODELHELPER
ZEND_GET_MODULE(ModelHelper)
#endif

/* {{{ PHP_INI
 */
/* Remove comments and fill if you need to have entries in php.ini
PHP_INI_BEGIN()
    STD_PHP_INI_ENTRY("ModelHelper.global_value",      "42", PHP_INI_ALL, OnUpdateLong, global_value, zend_ModelHelper_globals, ModelHelper_globals)
    STD_PHP_INI_ENTRY("ModelHelper.global_string", "foobar", PHP_INI_ALL, OnUpdateString, global_string, zend_ModelHelper_globals, ModelHelper_globals)
PHP_INI_END()
*/
/* }}} */

/* {{{ php_ModelHelper_init_globals
 */
/* Uncomment this function if you have INI entries
static void php_ModelHelper_init_globals(zend_ModelHelper_globals *ModelHelper_globals)
{
    ModelHelper_globals->global_value = 0;
    ModelHelper_globals->global_string = NULL;
}
*/
/* }}} */

/* {{{ PHP_MINIT_FUNCTION
 */
PHP_MINIT_FUNCTION(ModelHelper)
{
    /* If you have INI entries, uncomment these lines
    REGISTER_INI_ENTRIES();
    */

   zend_class_entry ModelHelper_class_entry;
   INIT_CLASS_ENTRY(ModelHelper_class_entry, "ModelHelper", ModelHelper_functions);
   ModelHelper_ce = zend_register_internal_class(&ModelHelper_class_entry TSRMLS_CC);
   return SUCCESS;
}
/* }}} */

/* {{{ PHP_MSHUTDOWN_FUNCTION
 */
PHP_MSHUTDOWN_FUNCTION(ModelHelper)
{
    /* uncomment this line if you have INI entries
    UNREGISTER_INI_ENTRIES();
    */
    return SUCCESS;
}
/* }}} */

/* Remove if there's nothing to do at request start */
/* {{{ PHP_RINIT_FUNCTION
 */
PHP_RINIT_FUNCTION(ModelHelper)
{
    return SUCCESS;
}
/* }}} */

/* Remove if there's nothing to do at request end */
/* {{{ PHP_RSHUTDOWN_FUNCTION
 */
PHP_RSHUTDOWN_FUNCTION(ModelHelper)
{
    return SUCCESS;
}
/* }}} */

/* {{{ PHP_MINFO_FUNCTION
 */
PHP_MINFO_FUNCTION(ModelHelper)
{
    php_info_print_table_start();
    php_info_print_table_header(2, "ModelHelper support", "enabled");
    php_info_print_table_row(2, "URL", "http://www.hucde.com");
    php_info_print_table_row(2, "author", "Summer.Hu");
    php_info_print_table_end();

    /* Remove comments if you have entries in php.ini
    DISPLAY_INI_ENTRIES();
    */
}
/* }}} */

PHP_METHOD(ModelHelper,escapePage)
{
    long return_i;
    zval **n;
    if (zend_get_parameters_ex(1, &n) == FAILURE) {
            WRONG_PARAM_COUNT;
    }

    convert_to_long_ex(n);
    return_i=MAX(1,Z_LVAL_PP(n));
    RETURN_LONG(return_i);
    //convert_to_long_base(return_value, 10);
}

PHP_METHOD(ModelHelper,uuid)
{
    long number;
    number = php_rand(TSRMLS_C);
    PHP_MD5_CTX context;
    unsigned char digest[16];
    char md5str[33];
    char string_number[25];
    int len;
    char *strg;
    len = spprintf(&strg, 0, "%u",number);
    PHP_MD5Init(&context);
    PHP_MD5Update(&context,strg,len);
    PHP_MD5Final(digest, &context);
    make_digest(md5str, digest);
    RETVAL_STRING(md5str, 1);
}
</zend_exceptions>

php_ModelHelper.h 的头文件

/*
  +----------------------------------------------------------------------+
  | PHP Version 5                                                        |
  +----------------------------------------------------------------------+
  | Copyright (c) 1997-2007 The PHP Group                                |
  +----------------------------------------------------------------------+
  | This source file is subject to version 3.01 of the PHP license,      |
  | that is bundled with this package in the file LICENSE, and is        |
  | available through the world-wide-web at the following url:           |
  | http://www.php.net/license/3_01.txt                                  |
  | If you did not receive a copy of the PHP license and are unable to   |
  | obtain it through the world-wide-web, please send a note to          |
  | license@php.net so we can mail you a copy immediately.               |
  +----------------------------------------------------------------------+
  | Author:                                                              |
  +----------------------------------------------------------------------+
*/

/* $Id: header 226204 2007-01-01 19:32:10Z iliaa $ */

#ifndef PHP_MODELHELPER_H
#define PHP_MODELHELPER_H

extern zend_module_entry ModelHelper_module_entry;
#define phpext_ModelHelper_ptr &ModelHelper_module_entry

#ifdef PHP_WIN32
#define PHP_MODELHELPER_API __declspec(dllexport)
#else
#define PHP_MODELHELPER_API
#endif

#ifdef ZTS
#include "TSRM.h"
#endif

PHP_MINIT_FUNCTION(ModelHelper);
PHP_MSHUTDOWN_FUNCTION(ModelHelper);
PHP_RINIT_FUNCTION(ModelHelper);
PHP_RSHUTDOWN_FUNCTION(ModelHelper);
PHP_MINFO_FUNCTION(ModelHelper);

PHP_METHOD(ModelHelper,escapePage);
PHP_METHOD(ModelHelper,uuid);
/* For testing, remove later. */

/*
      Declare any global variables you may need between the BEGIN
    and END macros here:     

ZEND_BEGIN_MODULE_GLOBALS(ModelHelper)
    long  global_value;
    char *global_string;
ZEND_END_MODULE_GLOBALS(ModelHelper)
*/

/* In every utility function you add that needs to use variables
   in php_ModelHelper_globals, call TSRMLS_FETCH(); after declaring other
   variables used by that function, or better yet, pass in TSRMLS_CC
   after the last function argument and declare your utility function
   with TSRMLS_DC after the last declared argument.  Always refer to
   the globals in your function as MODELHELPER_G(variable).  You are
   encouraged to rename these macros something shorter, see
   examples in any other php module directory.
*/

#ifdef ZTS
#define MODELHELPER_G(v) TSRMG(ModelHelper_globals_id, zend_ModelHelper_globals *, v)
#else
#define MODELHELPER_G(v) (ModelHelper_globals.v)
#endif

#endif    /* PHP_MODELHELPER_H */

/*
 * Local variables:
 * tab-width: 4
 * c-basic-offset: 4
 * End:
 * vim600: noet sw=4 ts=4 fdm=marker
 * vim<600: noet sw=4 ts=4
 */

然后编译，生成后输入 phpinfo.php 找到ModelHelper

编译成功，然后输入测试一下：

< ?
//$obj=new ModelHelper();
//echo $obj->escapePage(5);
//echo $obj->escapePage(-1);
//echo  echo qsyhcd_md5();
//echo $obj->uuid();
//var_dump($obj);

echo ModelHelper::escapePage(5)."<br />";
echo ModelHelper::escapePage(-1)."<br />";
echo ModelHelper::escapePage("d'")."<br />";
echo ModelHelper::uuid()."<br />";
?>

转载from：http://www.hucde.com/2010/03/18/29