getContacts

function getContacts($data)
{
    $contacts = [];

    $data = str_replace(' ', '', $data);

    $strings = explode(',', $data);

    foreach ($strings as $string) {

        if (strpos($string, '-') !== false) {

            list($start, $end) = explode('-', $string);

            if (strlen($end) == 2) {

                $end = substr($start, 0, strlen($start) - 2) . $end;

            }

            $control = 0;

            for ($number = $start; $number <= $end; $number++) {

                array_push ($contacts, phoneNumberFormat($number));

                $control++;

                if ($control >= 100) {

                    break;

                }
            }

        } else {

            array_push ($contacts, phoneNumberFormat($string));

        }
    }
    
//    // test
//
//    print_r ($contacts);
//
//    dd (count($contacts) . ' contacts added');

    return $contacts;

}