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
2. Request homepage
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>
2.2 Home page unified request code
<?<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 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>
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> }
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>
2.3.3 Initialize 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> }
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 Initialize 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 . $GLOBALS[<span>'</span><span>p</span><span>'</span>] . <span>'</span><span>/</span><span>'</span>);<span>//</span><span>当前平台的视图层目录</span> }
2.3.4 Registration automatic loading method
<span>private</span> <span>static</span><span> function _initAutoload() { </span><span>//</span><span>注册自动加载</span> spl_autoload_register(array(__CLASS__, <span>'</span><span>selfAutoload</span><span>'</span><span>)); } </span><span>'</span><span>selfAutoload</span><span>'</span><span>方法如下 </span><span>public</span> <span>static</span><span> function selfAutoload($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>
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> }
2.3.5 When we request localhost/index.php, it is equivalent to requesting localhost/index.php?p=front&c=shop&a=index and it will be initialized
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>
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; ——》 便是实例化catModel类 $cat_list </span>= $model_cat->getNestedList(); ——》取得所有前台分类
3. In the basic model, all basic operation database methods are encapsulated, among which the getNestedLIst method is as follows
<span>/*</span><span>* * 得到嵌套的分类列表数据 </span><span>*/</span> <span>public</span> function getNestedList($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>
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>
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>;
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
The above introduces the summary of the store mvc framework in the PHP project (1), including aspects of the content. I hope it will be helpful to friends who are interested in PHP tutorials.