class.notFound

Code example

<?php declare(strict_types = 1);

class Foo extends NonexistentClass
{
}

Why is it reported?

The code references a class that PHPStan cannot find. This can happen when extending, implementing, instantiating, or type-hinting a class that does not exist. Common causes include:

• A typo in the class name
• A missing use import statement
• The class file is not included in the autoloader
• A missing Composer dependency

At runtime, referencing a non-existent class will cause a fatal error.

How to fix it

Make sure the class exists and is properly autoloaded:

 <?php declare(strict_types = 1);

+use App\Models\BaseClass;
+
-class Foo extends NonexistentClass
+class Foo extends BaseClass
 {
 }

If the class comes from an external package, make sure the package is installed:

composer require vendor/package

If PHPStan cannot find a class that does exist at runtime, configure the autoloader or scanFiles/scanDirectories in your PHPStan configuration.

Learn more: Discovering Symbols