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Missing parameter list

Reports missing parameter lists in a classes' instantiations.

According to the PSR-12 specification, when instantiating a new class, parentheses MUST always be present even when there are no arguments passed to the constructor.

See PSR-12: Extended Coding Style (php-fig.org) for details.

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.

PhpNewClassMissingParameterListInspection
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 | Code style | PSR-12

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 PhpNewClassMissingParameterListInspection

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