加载自定义类库

index.php

require(__DIR__ . '/../vendor/autoload.php');require(__DIR__ . '/../vendor/yiisoft/yii2/Yii.php');Yii::$classMap['LibImage'] = __DIR__ . '/../libs/LibImage.php';$config = require(__DIR__ . '/../config/web.php');(new yii\web\Application($config))->run();

call

$img = new \LibImage();