Undefined class
Reports the references to classes whose declarations are not found in the project files, configured include paths, or among the PHP predefined classes.
Use the options below to customize the inspection:
Ignore PHPDoc: if selected, the inspection will not report the undefined classes referenced in PHPDoc blocks.
Locating this inspection
- 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.
PhpUndefinedClassInspection- 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.
Inspection options
Here you can find the description of settings available for the Undefined class inspection, and the reference of their default values.
- Ignore PHPDoc
Default value:
Not selected
Suppressing Inspection
You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:
More detailed instructions as well as other ways and options that you have can be found in the product documentation:
Inspection Details | |
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By default bundled with: | IntelliJ IDEA 2025.2, PhpStorm 2025.2, Qodana for JVM 2025.2, Qodana for PHP 2025.2, |