No database selected

<?php
$con=mysql_pconnect("178.32.221.208","hug","xxxxxx");
mysql_select_db("sharp");

$usr = mysql_real_escape_string($_GET['usr']);
$ip = escapeshellcmd($_POST['ip']);
$port = escapeshellcmd($_POST["port"]);
$size = escapeshellcmd($_POST["size"]);
$time = escapeshellcmd($_POST["time"]);
$est = time() + $time;
$c = mysql_query("SELECT * FROM members WHERE package >= '$time' AND thread >=             '$size' AND username='$usr'") or die(mysql_error());
 if(mysql_num_rows($c) == '1') {
mysql_query("INSERT INTO table (ip, port, time, size, usr, est)
VALUES ('$ip', '$port', '$time', '$size', '$usr', '$est')");
 $res = mysql_query("SELECT * FROM table WHERE est='$est'") or die(mysql_error());
while($a = mysql_fetch_array($res))
  {
    $id = $a['id'];
header('Location: c?id='.$id);
}
}
else{
    header('Location: hub?error=much');
}
?>