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();

来源：CSDN

作者：强哥83

链接：https://blog.csdn.net/hzqghost/article/details/44257617