php项目中商店mvc框架总结（1），mvc框架
1．代码结构的划分：
<span>目前的目录结构：
</span>/<span>站点根目录
</span>/application/<span>应用程序目录
Model</span>/<span>模型目录
View</span>/<span>视图目录
Back</span>/<span>后台
front</span>/<span>
test</span>/<span>测试平台
Controller</span>/<span>控制器目录
Back</span>/<span>后台
front</span>/<span>前台
test</span>/<span>测试平台
</span>/framework/<span>框架目录
MySQLDB.</span><span>class</span><span>.php 数据库操作类DAO
Model.</span><span>class</span><span>.php 基础模型类
</span>/index.php入口文件
2．请求首页
2.1请求首页参数实例（请求localhost/index.php?p=front&c=shop&a=index）
立即学习“PHP免费学习笔记（深入）”；
P=front <span>//</span><span>后台还是前台 参数有back和front</span> C=index <span>//</span><span>控制器，此处请求首页控制器</span> A=shop <span>//</span><span>动作，此处为首页shop动作</span>
2.2 首页统一请求代码
<?<span>php </span><span>//</span><span>首先载入框架类</span> require <span>'</span><span>./framework/Framework.class.php</span><span>'</span><span>; </span><span>//</span><span>运行项目</span> Framework::run();
2.3框架类代码
<span>/*</span><span>*
* 框架类 初始化基础功能
</span><span>*/</span>
<span>class</span><span> Framework {
</span><span>/*</span><span>*
* 项目框架类的运行入口
</span><span>*/</span>
<span>public</span> <span>static</span><span> function run() {
self::_initPathConst();</span><span>//</span><span>初始化路径常量</span>
self::_initConfig();<span>//</span><span>加载配置</span>
self::_initDispatchParam();<span>//</span><span>初始化分发参数</span>
self::_initPlatformPathConst();<span>//</span><span>初始化平台相关的路径常量</span>
self::_initAutoload();<span>//</span><span>注册自动加载方法</span>
self::_dispatch();<span>//</span><span>请求分发</span>
<span> }
}</span>2.3.1初始化路径常量
<span>/*</span><span>*
* 初始化路径常量
</span><span>*/</span>
<span>private</span> <span>static</span><span> function _initPathConst() {
</span><span>//</span><span>确定项目中使用的路径常量</span>
define(<span>'</span><span>ROOT_PATH</span><span>'</span>, getCWD() . <span>'</span><span>/</span><span>'</span>);<span>//</span><span>项目的根目录</span>
<span>
define(</span><span>'</span><span>APP_PATH</span><span>'</span>, ROOT_PATH . <span>'</span><span>application/</span><span>'</span>);<span>//</span><span>应用程序目录</span>
define(<span>'</span><span>CON_PATH</span><span>'</span>, APP_PATH . <span>'</span><span>controller/</span><span>'</span>);<span>//</span><span>控制器目录</span>
define(<span>'</span><span>MOD_PATH</span><span>'</span>, APP_PATH . <span>'</span><span>model/</span><span>'</span>);<span>//</span><span>模型目录</span>
define(<span>'</span><span>VIE_PATH</span><span>'</span>, APP_PATH . <span>'</span><span>view/</span><span>'</span>);<span>//</span><span>视图层目录</span>
define(<span>'</span><span>CFG_PATH</span><span>'</span>, APP_PATH . <span>'</span><span>config/</span><span>'</span>);<span>//</span><span>配置文件目录</span>
<span>
define(</span><span>'</span><span>FRW_PATH</span><span>'</span>, ROOT_PATH . <span>'</span><span>framework/</span><span>'</span>);<span>//</span><span>框架目录</span>
define(<span>'</span><span>TOL_PATH</span><span>'</span>, FRW_PATH . <span>'</span><span>tool/</span><span>'</span>);<span>//</span><span>工具目录</span>
<span>
define(</span><span>'</span><span>PUB_PATH</span><span>'</span>, ROOT_PATH . <span>'</span><span>public/</span><span>'</span>);<span>//</span><span>公共资源目录</span>
define(<span>'</span><span>UPD_PATH</span><span>'</span>, PUB_PATH . <span>'</span><span>upload_image/</span><span>'</span>);<span>//</span><span>上传图片目录</span>
}2.3.2加载配置文件
<span>private</span> <span>static</span><span> function _initConfig() {
</span><span>//</span><span>载入加载配置文件，并将配置项的值保存与 $config，全局变量中。</span>
$GLOBALS[<span>'</span><span>config</span><span>'</span>] = require CFG_PATH . <span>'</span><span>application.config.php</span><span>'</span><span>;
}</span>2.3.3初始化分发参数
<span>/*</span><span>*
* 确定p，c，a参数，分发参数，（路由参数）
</span><span>*/</span>
<span>private</span> <span>static</span><span> function _initDispatchParam() {
</span><span>//</span><span>获得平台参数</span>
$GLOBALS[<span>'</span><span>p</span><span>'</span>] = $p = isset($_GET[<span>'</span><span>p</span><span>'</span>]) ? $_GET[<span>'</span><span>p</span><span>'</span>] : $GLOBALS[<span>'</span><span>config</span><span>'</span>][<span>'</span><span>app</span><span>'</span>][<span>'</span><span>default_platform</span><span>'</span>];<span>//</span><span>p,platform
</span><span>//</span><span>获得控制器类参数</span>
$GLOBALS[<span>'</span><span>c</span><span>'</span>] = isset($_GET[<span>'</span><span>c</span><span>'</span>]) ? $_GET[<span>'</span><span>c</span><span>'</span>] : $GLOBALS[<span>'</span><span>config</span><span>'</span>][$p][<span>'</span><span>default_controller</span><span>'</span>];<span>//</span><span>c,controller
</span><span>//</span><span>获得动作参数</span>
$GLOBALS[<span>'</span><span>a</span><span>'</span>] = isset($_GET[<span>'</span><span>a</span><span>'</span>]) ? $_GET[<span>'</span><span>a</span><span>'</span>] : $GLOBALS[<span>'</span><span>config</span><span>'</span>][$p][<span>'</span><span>default_action</span><span>'</span>];<span>//</span><span>a,action</span>
}以上代码中用到了初始加载配置文件，初始化默认请求，当你直接请求：localhost/index.php，没有参数的时候，加载系统默认参数
2.3.4初始化平台相关的路径常量
<span>/*</span><span>*
* 初始化当前平台相关的路径常量
* 这个是用来判断P的，找到究竟是哪个控制下
</span><span>*/</span>
<span>private</span> <span>static</span><span> function _initPlatformPathConst() {
</span><span>//</span><span>与当前平台相关的路径常量</span>
define(<span>'</span><span>CUR_CON_PATH</span><span>'</span>, CON_PATH . $GLOBALS[<span>'</span><span>p</span><span>'</span>] . <span>'</span><span>/</span><span>'</span>);<span>//</span><span>当前平台的控制器目录</span>
define(<span>'</span><span>CUR_VIE_PATH</span><span>'</span>, VIE_PATH . $GLOBALS[<span>'</span><span>p</span><span>'</span>] . <span>'</span><span>/</span><span>'</span>);<span>//</span><span>当前平台的视图层目录</span>
}2.3.4注册自动加载方法
<span>private</span> <span>static</span><span> function _initAutoload() {
</span><span>//</span><span>注册自动加载</span>
spl_autoload_register(array(__CLASS__, <span>'</span><span>selfAutoload</span><span>'</span><span>));
}
</span><span>'</span><span>selfAutoload</span><span>'</span><span>方法如下
</span><span>public</span> <span>static</span><span> function selfAutoload($class_name) {
</span><span>//</span><span>先判断是否为框架核心类，框架中可以被确定的类</span>
$class_file =<span> array(
</span><span>'</span><span>Model</span><span>'</span> => FRW_PATH . <span>'</span><span>Model.class.php</span><span>'</span><span>,
</span><span>'</span><span>MySQLDB</span><span>'</span> => FRW_PATH . <span>'</span><span>MySQLDB.class.php</span><span>'</span><span>,
</span><span>'</span><span>Controller</span><span>'</span> => FRW_PATH . <span>'</span><span>Controller.class.php</span><span>'</span><span>,
</span><span>'</span><span>SessionDB</span><span>'</span> => TOL_PATH . <span>'</span><span>SessionDB.class.php</span><span>'</span><span>,
</span><span>'</span><span>Captcha</span><span>'</span> => TOL_PATH . <span>'</span><span>Captcha.class.php</span><span>'</span><span>,
</span><span>'</span><span>Upload</span><span>'</span> => TOL_PATH . <span>'</span><span>Upload.class.php</span><span>'</span><span>,
</span><span>'</span><span>Image</span><span>'</span> => TOL_PATH . <span>'</span><span>Image.class.php</span><span>'</span><span>,
</span><span>'</span><span>Page</span><span>'</span> => TOL_PATH . <span>'</span><span>Page.class.php</span><span>'</span><span>,
);
</span><span>if</span><span> (isset($class_file[$class_name])) {
</span><span>//</span><span>是核心类</span>
<span> require $class_file[$class_name];
}
</span><span>//</span><span>是否为模型类</span>
elseif (substr($class_name, -<span>5</span>) == <span>'</span><span>Model</span><span>'</span><span>) {
</span><span>//</span><span>模型类</span>
require MOD_PATH . $class_name . <span>'</span><span>.class.php</span><span>'</span><span>;
}
</span><span>//</span><span>是否为控制器类</span>
elseif (substr($class_name, -<span>10</span>) == <span>'</span><span>Controller</span><span>'</span><span>) {
</span><span>//</span><span>控制器类</span>
require CUR_CON_PATH . $class_name . <span>'</span><span>.class.php</span><span>'</span><span>;
}
}</span>2.3.4 请求分发
<span>/*</span><span>*
* 请求分发
* 将请求交由 某个控制器的某个动作完成
</span><span>*/</span>
<span>private</span> <span>static</span><span> function _dispatch() {
</span><span>//</span><span>实例化控制器类，与 调用相应的动作方法
</span><span>//</span><span>ucfirst() 函数把字符串中的首字符转换为大写。</span>
$controller_name = ucfirst($GLOBALS[<span>'</span><span>c</span><span>'</span>]) . <span>'</span><span>Controller</span><span>'</span>;<span>//</span><span>match Match . Controller
</span><span>//</span><span>载入控制器类</span>
$controller = <span>new</span> $controller_name;<span>//</span><span>可变类名
</span><span>//</span><span>调用动作方法</span>
$action_name = $GLOBALS[<span>'</span><span>a</span><span>'</span>] . <span>'</span><span>Action</span><span>'</span><span>;
$controller</span>->$action_name();<span>//</span><span>可变方法</span>
}2.3.5当我们请求localhost/index.php的时候，相当于请求localhost/index.php?p=front&c=shop&a=index于是将初始化
application\controller\front下的ShopController控制器，请求动作为indexAction
indexAction代码如下：
<span>public</span><span> function indexAction() {
</span><span>//</span><span>得到分类数据</span>
$model_cat = <span>new</span><span> CatModel;
$cat_list </span>= $model_cat-><span>getNestedList();
</span><span>//</span><span>载入前台首页模板</span>
require CUR_VIE_PATH . <span>'</span><span>index.html</span><span>'</span><span>;
}</span>需要说明的是:
1、ShopController继承与平台控制器PlatformController，平台控制器继承于基础控制器类：controller
关系如下：
2、在确定好MVC中的，Control动作后，接下来就是实现Model
$model_cat = <span>new</span><span> CatModel; ——》 便是实例化catModel类
$cat_list </span>= $model_cat->getNestedList(); ——》取得所有前台分类3、在基础模型中，封装好所有基础操作数据库方法，其中getNestedLIst方法如下
<span>/*</span><span>*
* 得到嵌套的分类列表数据
</span><span>*/</span>
<span>public</span> function getNestedList($p_id=<span>0</span><span>) {
</span><span>//</span><span>获得所有分类</span>
$list = $<span>this</span>-><span>getList();
</span><span>//</span><span>制作嵌套的数据,递归查找</span>
<span>return</span> $<span>this</span>-><span>getNested($list, $p_id);
}</span>4、getList方法如下
<span>/*</span><span>*
* 获得列表数据
</span><span>*/</span>
<span>public</span><span> function getList() {
$sql </span>= <span>"</span><span>select * from `php_category`</span><span>"</span><span>;
</span><span>return</span> $<span>this</span>->_db-><span>fetchAll($sql);
}</span>5、Model实现好之后，就是载入View
<span>//</span><span>载入前台首页模板</span>
require CUR_VIE_PATH . <span>'</span><span>index.html</span><span>'</span>;2.3.6 总结：实现一个功能，首先确定Control，然后实现Model，最后载入View
2.3.7效果图 前台页面不加以阐述
