学习PHP C扩展之面向对象开发方式
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 | | [email protected] 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 | | [email protected] 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 />"; ?>