index.php
->引入 vendor/auto_load.php
auto_load.php
->引入 ventor/composer/autoload_real.php
->执行 ComposerAutoloaderInit240f916b39e20bc11bc03e2039805bd4->getLoader
autoload_real.php
->getLoader
->单例
->spl_autoload_register(array('ComposerAutoloaderInit240f916b39e20bc11bc03e2039805bd4','loadClassLoader'))
->self::$loader = new \Composer\Autoload\ClassLoader();
->引入 \Composer\Autoload\ClassLoader
->引入 autoload_namespaces.php 给作为属性 $loader
->$vendorDir $baseDir
->引入 autoload_psr4.php 作为属性给 $loader
->$loader->register(true);
->spl_autoload_register this,loadClass
->loadClass -> findFile
->引入 autoload_files.php require
->return $loader
index.php
->初始化了一个$loader (暂时不知道什么用)
->引入 /vendor/yiisoft/yii2/Yii.php
Yii.php
-> 引入 BaseYii.php ,Yii 继承 BaseYii
->spl_autoload_register(BaseYii,autoload)
->Yii::$classMap = include(__DIR__ . '/classes.php'); //引入一堆php class地址
->Yii::$container = new yii\di\Container;//容器
//继承关系梳理
yii\di\Container(容器) -> yii\base\Component(实现 属性,事件,行为 功能的基类) -> Object(实现 属性 功能的基类,含有__construct)
yii\web\Application(所有web应用类的基类) -> \yii\base\Application(所有应用的基类,__construct) -> Module(所有模块和应用的基类,含有__construct) -> yii\di\ServiceLocator(服务定位器,包含所有模块和应用) -> yii\base\Component -> Object
index.php
->$config 引入
(new yii\web\Application($config))->run();
->\yii\base\Application __construct()
->Yii::$app = $this (Application)
->$this->setInstance($this); 设置当前请求类的实例 (把Application类的对象push进Yii的loadedModules里)
->$this->preInit($config);
->$this->_basePath = $_config['basepath'] Yii::aliases[@app] = $_config['basepath']
->$this->getVendorPath 设置框架路径
->setVendorPath Yii::aliases[@vendor] Yii::aliases[@bower] Yii::aliases[@npm]
->$this->getRuntimePath 同上,设置runtimePath Yii::aliases[@runtime]
->setTimeZone 设置时区
->核心组件信息(地址)注入$config log view formatter i18n mailer urlManager assetManager security
->registerErrorHandler 定义错误处理程序
->Component::__construct($config); Object中的__construct //这步发生了很多事情
->Yii::configure($this) 把$config赋给$this作属性
? $this->bootstrap 中的值哪来的 ?->配置文件来的。。。。
->$this->init()
->$this->bootstrap(); 初始化扩展和执行引导组件。
->引入@vendor/yiisoft/extensions.php
->Yii::aliases['xxx'] = 'xxx'; extensions.php中aliase地址
<!-- 初始化完成 -->
->\yii\base\Application->run()
->$this->trigger($name) $event = new Event; //$name = beforeRequest 执行 _event[beforeRequest]handler
->$event->sender = application object
$event->name = $name;
//这两句没懂
$event->data = $handler[1];
call_user_func($handler[0], $event);
Event::trigger($this, $name, $event); //$this = application object
->$response = $this->handleRequest($this->getRequest());
->$this->getRequest() ->get('request') get方法位于ServiceLocator ,返回指定id的实例(返回request实例到_components['request'])
->$this->handleRequest(request对象) //request对象的类是yii/web/request
->list ($route, $params) = $request->resolve();//解决当前请求的路由和相关参数
->$params 放置地址栏解析的结果数组Array ( [0] => [1] => Array ( [m] => sds 1 => dasd ) )
->runAction($route, $params); //位于Module
->list($controller, $actionID) = $this->createController($route) 返回array('0'=>控制器controller对象,'1'=>'action名')
$controller 赋给Yii::$app->controller
->$controller->runAction($actionID, $params); yii/base/Controller
->runAction($actionID, $params); yii/base/Controller
->$action = $this->createAction($id); //生成一个InlineAction对象,赋给Yii::$app->requestedAction
InlineAction __construct $this->actionMethod = $actionMethod;
->beforeAction
->$action->runWithParams($params); //位于 yii/base/InlineAction
->$args = $this->controller->bindActionParams($this, $params);//位于yii/web/controller $this=>InlineAction $params=>模块/控制器 数组 将参数綁定到action,返回有效参数数组$args
->赋给Yii::$app->requestedParams = $args;
->call_user_func_array([$this->controller, $this->actionMethod], $args) //执行第一个回调函数 真正执行
->afterAction
->返回执行结果(页面已出) 给Module中的runAction
->返回结果给handleRequest
->$response = $this->getResponse(); 返回一个response对象,具体同上
->$response->data = $result;
->返回$response给yii/base/Application 的 run $response
->$response->send();输出内容
<!-- 页面输出完成 -->
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