Yii2 kint extension for debug. Now you can use functions d(), ddd().
Install with composer
composer require digitv/kint:1.x-dev
Then include it in your web config like this:
if (YII_ENV_DEV) {
// configuration adjustments for 'dev' environment
...
//Add kint
$config['bootstrap'][] = 'kint';
$config['modules']['kint'] = [
'class' => 'digitv\kint\Module',
];
}