function parseContacts($filename)
{
    $contactsArray = array();
    // todo - read file and parse contacts
    $handle = fopen($filename, 'r');
    $contentString = trim(fread($handle, filesize($filename)));
    $arrayOfStrings = explode(PHP_EOL, $contentString);
    foreach ($arrayOfStrings as $index => $contact) {
        $innerArray = explode('|', $contact);
        unset($arrayOfStrings[$index]);
        $contactsArray[$index]['name'] = $innerArray[0];
        $contactsArray[$index]['number'] = numberSplit($innerArray[1]);
    }
    fclose($handle);
    return $contactsArray;
}
function parseContacts($filename)
{
    $contacts = array();
    $handle = fopen($filename, 'r');
    $contents = fread($handle, filesize($filename));
    $contents = trim($contents);
    $contacts = explode("\n", $contents);
    fclose($handle);
    foreach ($contacts as $index => $contact) {
        $contact = explode('|', $contact);
        unset($contacts[$index]);
        // $number = substr_replace($number, '-', 3, 0);
        // $number = substr_replace($number, '-', 7, 0);
        // $contacts[$index]['name']   = $contact[0];
        // $contacts[$index]['number'] = numberSplit($contact[1]);
        $contacts[$index] = ['name' => $contact[0], 'number' => numberSplit($contact[1])];
    }
    return $contacts;
}