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Strict type checking rules violation

Reports violations of the strict type checking rules.

In strict mode, only the variables exactly matching the declaration types are accepted. Strict type-checking mode can be enabled:

  • Per file, if the declare(strict_types=1) directive is specified. The directive must be the first statement in a file, block mode is explicitly disallowed.

  • For all files, if the Enable for all files inspection option is enabled.

See Strict typing ( for details.

Inspection options

Here you can find the description of settings available for the Strict type checking rules violation inspection, and the reference of their default values.

Enable for all files

Not selected

Inspection Details

By default bundled with:

PhpStorm 2024.1, Qodana for PHP 2024.1,

Can be installed with plugin:


Last modified: 12 March 2024