yii\caching\ExpressionDependency::generateDependencyData PHP Method

This method returns the result of the PHP expression.

protected generateDependencyData ( Cache $cache ) : mixed
$cache	Cache	the cache component that is currently evaluating this dependency
return	mixed	the data needed to determine if dependency has been changed.

    protected function generateDependencyData($cache)
    {
        return eval("return {$this->expression};");
    }

ExpressionDependency