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Write access to 'readonly' property outside of declaration scope

Reports the write accesses to readonly properties that are made outside the declaration scope. A declaration scope effectively means non-static methods of the class in which a property is declared.

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.

PhpReadonlyPropertyWrittenOutsideDeclarationScopeInspection
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 | General

See Readonly properties (php.net) for details.

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:

//noinspection PhpReadonlyPropertyWrittenOutsideDeclarationScopeInspection

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

Last modified: 18 September 2025