This issue is raised when an attempt is made to access an undefined property. This may not have been intended, and it is advisable to give the code another look to make sure the property is defined in the scope it is used in.

Bad practice

class User
{
    private string $firstName = 'John';

    public function getFirstName(): void
    {
        return $this->firstName;
    }

    public function getLastName(): void
    {
        return $this->lastName; // invalid: property "lastName" is not defined
    }
}

Recommended

class User
{
    private string $firstName = 'John';
    private string $lastName = 'Doe';

    public function getFirstName(): void
    {
        return $this->firstName;
    }

    public function getLastName(): void
    {
        return $this->lastName;
    }
}

References

Classes and Objects - Properties.

saidtechnology / newsapp_api

No ignore rules found