/*case 'ext':
    /* search code using phone extension */

  /* select data from PHONES table
  $sql = "SELECT * FROM phones WHERE ";
  $ext = $search_string;

  for ($x = 1; $x <= 4;  x++) {
    $sql .= "ext$x = \'$ext\' || ";
  }

  $sql = substr($sql, 0, -4);

  echo $sql;
//    $sql .="ext = " . $ext ."";
/*
  $sql = "SELECT * FROM phones WHERE ext = " . $uid . "";

  $result = mysql_query($sql, $conn);
  if (!$result) {
     die("<b>ERROR:</b> Unable to select user's phone information." . mysql_error());
  }

  while($row = mysql_fetch_array($result))
     {
        $phone_ip = $row['phone_ip'];
        $phone_model = $row['model'];
        $phone_type = $row['type'];
        $phone_ext1 = $row['ext1'];
        $phone_ext2 = $row['ext2'];
        $phone_ext3 = $row['ext3'];
        $phone_ext4 = $row['ext4'];
        $cable_id = $row['cable_id'];
        $location_id = $row['lid'];
     }

  /* select data from USERS table
  $sql = "SELECT * FROM users WHERE lid= '$search_string'";

  $result = mysql_query($sql, $conn);
  if (!$result) {
     die("<b>ERROR:</b> Unable to select Location ID." . mysql_error());
  }

  $num_rows = mysql_num_rows($result);

  while($row = mysql_fetch_array($result))
     {
        /* grab identifiers
        $uid = $row['uid'];
        $first = $row['first'];
        $last = $row['last'];
        $user = $row['username'];
        $password = $row['password'];
        $title = $row['title'];
        $cell_phone = $row['cell_phone'];
        $cell_type = $row['cell_type'];
        $printer1 = $row['printer1'];
        $printer2 = $row['printer2'];
        $pc_name = $row['pc_name'];
        $cell_number = $row['cell_number'];
        $full_name = $first . " " . $last;
     }

  /* select data from NETWORK table
    $sql = "SELECT * FROM network WHERE uid = " . $uid . "";

    $result = mysql_query($sql, $conn);
    if (!$result) {
       die("<b>ERROR:</b> Unable to select user's network information." . mysql_error());
    }

    while($row = mysql_fetch_array($result))
       {
          $lid = $row['lid'];
          $equpment_type = $row['equipment_type'];
          $equipment_func = $row['equipment_func'];
          $cableid = $row['cable_id'];
       }

  break;*/