I'm trying to do a search based on

<select multiple=multiple name="chkUnr[]">

I'm getting out the values from select by running code:

 for($i=0;$i<count($_POST["chkUnr"]);$i++)
                    {
                    if($_POST["chkUnr"][$i] != "")
                    {
                        $search_country = $_POST["chkUnr"][$i];                     
                    }

            $query = "";
            $query .= "SELECT users.* FROM users";
            if (isset($_POST['singles_online']) ? $_POST['singles_online'] : 0 == 1) {
              $query .= " LEFT JOIN online ON online.user_id = users.id";
            }
            $query .= " WHERE";
            if (isset($_POST['vip']) ? $_POST['vip'] : 0 == 1) {
             $query .= " users.vip = 1 AND";
            }
            if (isset($_POST['profile_image']) ? $_POST['profile_image'] : 0 == 2) {
              $query .= " users.profile_image = '2' AND";
            }
            if (isset($_POST['singles_online']) ? $_POST['singles_online'] : 0 == 1) {
              $query .= " online.is_online = 1 AND";
            }
            $query .= " (id NOT IN (SELECT user_id FROM users_blocked WHERE blocked_id = '$user_id')) AND";

            $query .= " (users.user_age >= '$age_from' AND users.user_age <= '$age_to') AND";

            $query .= " (users.gender = '$gender_search') AND";

            $query .= " users.country IN ('$search_country')";

            $search_query = mysql_query($query);


            }

And i can print out the values but the problem comes when i do the SQL search. It only pick up the first value in this case im using countries: So when i select Sweden, Germany, Usa i can print them all out but when trying to do a SQL query only Sweden is being picked up.

I've tried with this code but still same result.