#19380 PHP 8.1, class_exists(): Passing null to parameter #1 ($class) of type string is deprecated

[mazraara]

Caused by /app/vendor/yiisoft/yii2-debug/src/panels/UserPanel.php

        if (!$this->isEnabled() || $this->getUser()->isGuest) {
            return;
        }

        $this->userSwitch = new UserSwitch(['userComponent' => $this->userComponent]);
        $this->addAccessRules();

        if (!is_object($this->filterModel)
            && class_exists($this->filterModel)
            && in_array('yii\debug\models\search\UserSearchInterface', class_implements($this->filterModel), true)
        ) {
            $this->filterModel = new $this->filterModel;
        } elseif ($this->getUser() && $this->getUser()->identityClass) {
            if (is_subclass_of($this->getUser()->identityClass, 'yii\db\ActiveRecord')) {
                $this->filterModel = new \yii\debug\models\search\User();
            }
        }
    }

Reference https://php.watch/versions/8.1/internal-func-non-nullable-null-deprecation

Additional info

Q	A
Yii version	2.0.45
PHP version	8.1
Operating system	Mac

[samdark]

@mazraara do you have some time for a pull request?

[mazraara]

@samdark looks like there is already a fix for this here https://github.com/yiisoft/yii2-debug/pull/474/commits/5508ebe1bac8395c959b595a75e1a10aaf71124e

[samdark]

Great. Closing the issue then. Thanks for re-checking.