数据与智能

<?php
defined('APP_ENV') or define('APP_ENV', 'development');
if (APP_ENV == 'production') {
    ini_set('display_errors', 0);
    error_reporting(E_ALL);
    define('YII_ENABLE_ERROR_HANDLER', false);
    $yii = dirname(__FILE__) . '/yii/framework/yiilite.php';
    defined('YII_TRACE_LEVEL') or define('YII_TRACE_LEVEL', 1);
} else {
    error_reporting(E_ALL);
    $yii = dirname(__FILE__) . '/yii/framework/yii.php';
    defined('YII_DEBUG') or define('YII_DEBUG', true);
    defined('YII_TRACE_LEVEL') or define('YII_TRACE_LEVEL', 3);
}
$config = dirname(__FILE__) . '/protected/configs/' . APP_ENV . '.php';

require_once($yii);
$YiiApp = Yii::createWebApplication($config);
$YiiApp->run();

public static function createWebApplication($config=null)
{
    return self::createApplication('CWebApplication', $config);
}

public static function createApplication($class, $config=null)
{
    return new $class($config);
}

public function __construct($config=null)
{
    Yii::setApplication($this);

    // set basePath at early as possible to avoid trouble
    if(is_string($config))
        $config=require($config);
    if(isset($config['basePath']))
    {
        $this->setBasePath($config['basePath']);
        unset($config['basePath']);
    }
    else
        $this->setBasePath('protected');
    Yii::setPathOfAlias('application',$this->getBasePath());
    Yii::setPathOfAlias('webroot',dirname($_SERVER['SCRIPT_FILENAME']));
    if(isset($config['extensionPath']))
    {
        $this->setExtensionPath($config['extensionPath']);
        unset($config['extensionPath']);
    }
    else
        Yii::setPathOfAlias('ext',$this->getBasePath().DIRECTORY_SEPARATOR.'extensions');
    if(isset($config['aliases']))
    {
        $this->setAliases($config['aliases']);
        unset($config['aliases']);
    }

    $this->preinit();

    $this->initSystemHandlers();
    $this->registerCoreComponents();

    $this->configure($config);
    $this->attachBehaviors($this->behaviors);
    $this->preloadComponents();

    $this->init();
}

$yiiApp = Yii::createApplication('MyWebApplication', $config);
$yiiApp->run();

public function configure($config)
{
    if(is_array($config))
    {
        foreach($config as $key=>$value)
            $this->$key=$value;
    }
}

public function __set($name,$value)
{
    $setter='set'.$name;
    if(method_exists($this,$setter))
        return $this->$setter($value);
    elseif(strncasecmp($name,'on',2)===0 && method_exists($this,$name))
    {
        // duplicating getEventHandlers() here for performance
        $name=strtolower($name);
        if(!isset($this->_e[$name]))
            $this->_e[$name]=new CList;
        return $this->_e[$name]->add($value);
    }
    elseif(is_array($this->_m))
    {
        foreach($this->_m as $object)
        {
            if($object->getEnabled() && (property_exists($object,$name) || $object->canSetProperty($name)))
                return $object->$name=$value;
        }
    }
    if(method_exists($this,'get'.$name))
        throw new CException(Yii::t('yii','Property "{class}.{property}" is read only.',
            array('{class}'=>get_class($this), '{property}'=>$name)));
    else
        throw new CException(Yii::t('yii','Property "{class}.{property}" is not defined.',
            array('{class}'=>get_class($this), '{property}'=>$name)));
}

'behaviors' => array(
    'behaviorName'=>array(
        'class'=>'path.to.BehaviorClass',
        'property1'=>'value1',
        'property2'=>'value2',
    )
),

/**
 * Loads static application components.
 */
protected function preloadComponents()
{
    foreach($this->preload as $id)
        $this->getComponent($id);
}

protected function init()
{
    parent::init();
    // preload 'request' so that it has chance to respond to onBeginRequest event.
    $this->getRequest();
}

/**
 * Runs the application.
 * This method loads static application components. Derived classes usually overrides this
 * method to do more application-specific tasks.
 * Remember to call the parent implementation so that static application components are loaded.
 */
public function run()
{
    if($this->hasEventHandler('onBeginRequest'))
        $this->onBeginRequest(new CEvent($this));
    // 这里为了处理程序主动调用exit()或者抛出异常时的情况
    register_shutdown_function(array($this,'end'),0,false);
    // 请求处理
    $this->processRequest();
    if($this->hasEventHandler('onEndRequest'))
        $this->onEndRequest(new CEvent($this));
}

public function processRequest()
{
    // 可以在配置文件里配置request组件时，提供catchAllRequest参数
    // catchAllRequest是一个数组，第一个元素指定一个controller及一个action，其余元素是这个action的参数
    // 如果配置了catchAllRequest，就可以用这个controller/action来处理所有的请求，当网站进入维护状态时，有其用处。
    if(is_array($this->catchAllRequest) && isset($this->catchAllRequest[0]))
    {
        $route=$this->catchAllRequest[0];
        foreach(array_splice($this->catchAllRequest,1) as $name=>$value)
            $_GET[$name]=$value;
    }
    else
        // 正常的路由解析
        // 组件urlManager ->parseUrl 组件request
        $route=$this->getUrlManager()->parseUrl($this->getRequest());
    // 根据路由执行控制器处理函数
    $this->runController($route);
}

/**
 * Creates the controller and performs the specified action.
 * @param string $route the route of the current request. See {@link createController} for more details.
 * @throws CHttpException if the controller could not be created.
 */
public function runController($route)
{
    if(($ca=$this->createController($route))!==null)
    {
        list($controller,$actionID)=$ca;
        $oldController=$this->_controller;
        $this->_controller=$controller;
        $controller->init();
        $controller->run($actionID);
        $this->_controller=$oldController;
    }
    else
        throw new CHttpException(404,Yii::t('yii','Unable to resolve the request "{route}".',
            array('{route}'=>$route===''?$this->defaultController:$route)));
}

public function run($actionID)
{
    if(($action=$this->createAction($actionID))!==null)
    {
        if(($parent=$this->getModule())===null)
            $parent=Yii::app();
        if($parent->beforeControllerAction($this,$action))
        {
            $this->runActionWithFilters($action,$this->filters());
            $parent->afterControllerAction($this,$action);
        }
    }
    else
        $this->missingAction($actionID);
}

* For a method-based filter (called inline filter), it is specified as 'FilterName[ +|- Action1, Action2, ...]',
 * where the '+' ('-') operators describe which actions should be (should not be) applied with the filter.
 *
 * For a class-based filter, it is specified as an array like the following:
 * <pre>
 * array(
 *     'FilterClass[ +|- Action1, Action2, ...]',
 *     'name1'=>'value1',
 *     'name2'=>'value2',
 *     ...
 * )
 * </pre>
 * where the name-value pairs will be used to initialize the properties of the filter.

public function runActionWithFilters($action,$filters)
{
    if(empty($filters))
        $this->runAction($action);
    else
    {
        $priorAction=$this->_action;
        $this->_action=$action;
        CFilterChain::create($this,$action,$filters)->run();
        $this->_action=$priorAction;
    }
}

public function runAction($action)
{
    $priorAction=$this->_action;
    $this->_action=$action;
    if($this->beforeAction($action))
    {
        if($action->runWithParams($this->getActionParams())===false)
            $this->invalidActionParams($action);
        else
            $this->afterAction($action);
    }
    $this->_action=$priorAction;
}

public function run()
{
    if($this->offsetExists($this->filterIndex))
    {
        $filter=$this->itemAt($this->filterIndex++);
        Yii::trace('Running filter '.($filter instanceof CInlineFilter ? get_class($this->controller).'.filter'.$filter->name.'()':get_class($filter).'.filter()'),'system.web.filters.CFilterChain');
        $filter->filter($this);
    }
    else
        $this->controller->runAction($this->action);
}

public function filter($filterChain)
{
    $method='filter'.$this->name;
    $filterChain->controller->$method($filterChain);
}

public static function createApplication($class, $config=null)
{
    return new $class($config);
}