Undefined class constant

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

PhpUndefinedClassConstantInspection

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | PHP | Undefined symbols

Here you can find the description of settings available for the Undefined class constant inspection, and the reference of their default values.

Downgrade severity if __magic methods are present in class

Default: Selected

Notify on accessing member of mixed, object, stdClass, undefined type, null

Not selected