Last modified: 16 May 2022

Reports the language features used in source code that are not supported for the selected language level.

For example, union types can be used only in PHP 8.0 and later.

tip

Learn more about Supported PHP Versions in PhpStorm.

Suppress an inspection in the editor

1. Place the caret at the highlighted line and press AltEnter or click .

2. Click the arrow next to the inspection you want to suppress and select the necessary suppress action.