1 return [ 2 'yii\base\Action' => YII2_PATH . '/base/Action.php', 3 'yii\base\ActionEvent' => YII2_PATH . '/base/ActionEvent.php', 4 'yii\base\ActionFilter' => YII2_PATH . '/base/ActionFilter.php', 5 'yii\base\Application' => YII2_PATH . '/base/Application.php', 6 'yii\base\ArrayAccessTrait' => YII2_PATH . '/base/ArrayAccessTrait.php', 7 'yii\base\Arrayable' => YII2_PATH . '/base/Arrayable.php', 8 'yii\base\ArrayableTrait' => YII2_PATH . '/base/ArrayableTrait.php', 9 'yii\base\Behavior' => YII2_PATH . '/base/Behavior.php', 10 'yii\base\BootstrapInterface' => YII2_PATH . '/base/BootstrapInterface.php', 11 'yii\base\Component' => YII2_PATH . '/base/Component.php', 12 ...... 13 ];
namespace相當於Yii里面的別名,從上一段return的數組來看,可以把namespace抽象成array的key,然后根據key的值去計算獲取value,value就是文件的絕對路徑,Yii就幫你include
