Require Strict Types

The strict_types declaration must be present.

Valid: `strict_types` declaration is present.

declare(<em>strict_types=1</em>);

declare(encoding='UTF-8', <em>strict_types=0</em>);

Invalid: Missing `strict_types` declaration.

declare(encoding='ISO-8859-1'<em></em>);
The strict_types declaration must be enabled.

Valid: `strict_types` declaration is enabled.

declare(strict_types=<em>1</em>);

Invalid: `strict_types` declaration is disabled.

declare(strict_types=<em>0</em>);