Error

PHP Noticeyii\base\ErrorException

Undefined offset: 2

$_GET = [
    'name' => 'Kituri interfoane',
    'id' => '341',
    'filter1' => 'Comunicare%7CAnalog%7C581',
    'filter2' => 'Nr.%20posturi%20(familii)%7C1%7C713',
];