无论查询是什么，in_array都会返回false

Okay I have a database with 3 ip addresses. and when I run the following code even when the table is empty still runs the same code:

fetch row model:

$whitelistip = explode(",", $usercheck->ipwhitelist);

and the code to check if the users ip address/addresses is in the row which will be stored with commas like: 123,4323,354. Yet when the database has the same ip or the row is empty the following if code always runs successfully and can't get past it :(

        if(isset($whitelistip) && !in_array($_SERVER["REMOTE_ADDR"],$whitelistip)){

            $date =  date("F Y h:i:s");
            $addlogin = $this->db->prepare("INSERT INTO logins(email,date,ip,status) VALUES(?,?,?,?)");
            $addlogin->execute(array($email,$date,$_SERVER["REMOTE_ADDR"],'Unsuccessful login'));
           echo '
              <div class="row row-centered">
              <div class="col-md-3"></div>
              <div class="col-md-5">
              <div class="alert alert-danger">
              <strong>Oh snap!</strong> Your IP address is not on the whitelist for this account
              </div>
              </div>
              </div>';