在日期范围或特定日期之间获取aweber订阅者

I am fetching subscribers from aweber using PHP API. I am able to fetch all subscriber or from specific list. Following code, I am using

try {
$params = array('status' => 'subscribed');
$found_subscribers = $account->findSubscribers($params);
foreach($found_subscribers as $subscriber) {
    echo $subscriber->email . "
";     
}
} catch(AWeberAPIException $exc) {
print "<h3>AWeberAPIException:</h3>";
print " <li> Type: $exc->type              <br>";
print " <li> Msg : $exc->message           <br>";
print " <li> Docs: $exc->documentation_url <br>";
print "<hr>";
}

My question is, is there any way so that I can get records between specific date range? Current I know only following search parameter

$params = array('status' => 'subscribed');

I have read documentation but could not find.

Fetching by date range is not available unfortunately. I've had the same problem.

It would be easier for you to simply export all users to a mysql table since you do seem to know programming and then query your table by date range, which is possible.