Error

PHP Noticeyii\base\ErrorException

Undefined offset: 2

$_GET = [
    'name' => 'Bariere auto',
    'id' => '248',
    'filter1' => 'Motor%7C24V%20DC%7C787',
    'filter2' => 'Tip%20bariera%7CLiniara%7C776',
    'filter3' => 'Lungime%20bariera%20(m)%7C3.7%7C782',
];