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Summary of mvc framework for stores in php projects (1), mvc framework_PHP tutorial

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Release： 2016-07-13 10:03:55
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Summary of store mvc framework in PHP project (1), mvc framework

1. Division of code structure: 

<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
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2． Request Home Page

2.1 Request homepage parameter example (request localhost/index.php?p=front&c=shop&a=index) 

 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>
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2.2 Unified request code for homepage

<?<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();
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2.3 Framework code

<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>
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2.3.1 Initialization path constants

<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>
    }
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2.3.2 Load configuration file 

<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>
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2.3.3 Initialization distribution parameters 

<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>
    }
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The above code uses the initial loading configuration file to initialize the default request. When you directly request: localhost/index.php without parameters, the system default parameters are loaded

2.3.4 Initializing platform-related path constants

<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>
    }
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2.3.4 Registration automatic loading method

<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>
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2.3.4 Request Distribution

<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>
    }
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2.3.5 When we request localhost/index.php, it is equivalent to requesting localhost/index.php?p=front&c=shop&a=index and then initialize

The ShopController controller under applicationcontrollerfront, the request action is indexAction

The indexAction code is as follows: 

<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>
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What needs to be explained is:

1. ShopController inherits from PlatformController, and the platform controller inherits from the basic controller class: controller

The relationship is as follows:

2. After determining the Control action in MVC, the next step is to implement the Model

   $model_cat = <span>new</span><span> CatModel;   &mdash;&mdash;》 便是实例化catModel类
    $cat_list </span>= $model_cat->getNestedList();  &mdash;&mdash;》取得所有前台分类
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3. In the basic model, all basic operation database methods are encapsulated, among which the getNestedLIst method is as follows 

<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>
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4. The getList method is as follows

 <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>
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5. After the Model is implemented, load the 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>;
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2.3.6 Summary: To implement a function, first determine the Control, then implement the Model, and finally load the View

2.3.7 renderings will not be explained on the front page

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