PhpStorm Field accessed via magic method

Question

I have ignited datatables Library in my CodeIgniter library folder.

Some Code from Library

class Datatables
{
    /**
     * Global container variables for         


        

Answer 1

If you don't want to disable the inspection for the whole project, and can't modify the class file to add a @property tag, this is how to suppress the warning at the location where it is used:

/** @noinspection PhpUndefinedFieldInspection */

Just add it in a new line right before the line where the magic field is used.

Answer 2

Edit: Just because I keep getting upvotes for this, I want to preface this answer with a caveat. I inherited an old project that I would not be working on long term nor be paid to properly type everything. I consider the below a nuclear option and would only do so under similar conditions. If this is a project you own or will at least be working with a long time, especially in modern PHP 7/8 and beyond era, please don't do this and tidy up your code instead with actual types or at least a docblock :) Original answer follows below.

If you want to remove this without document comments you can uncheck Notify about access to a property via magic method which is found in

Project Settings > Inspections > PHP > Undefined > Undefined property

PhpStorm preferences screenshot

Answer 3

As mentioned by LazyOne in the question comments:

You have to declare them via @property in PHPDoc comment that belongs to that class.

/**
 * @property string $bar
 */
class Foo {

    public function __get($name) {
        if ($name == 'bar') {
            return 'bar';
        }
        return NULL;
    }
}

Snippet from Dmitry Dulepov's article "Quick tip: magic methods and PhpStorm".