Cannot store value into database

when i submit the form.. the form display the 'error' msg that mean the query does'nt work.. i've compare the code with the other code and it seem similar... i dont know what to do with this.. please guys... help me...

(here's is the form code)

<?php
if(isset($_GET['bookno']))
        $bookingno = $_GET['bookno'];
    elseif(isset($_POST['bookno']))
        $bookingno = $_POST['bookno'];
    else
        $bookingno = "";

    $db = mysql_connect('localhost','root') 
    or die ("unable to connect");
    mysql_select_db('fyp',$db) or die ("able to select");

$sql_select = "SELECT * FROM `booking` "
                    . " WHERE `bookingno`='".trim($bookingno)."'";

     $result = mysql_query($sql_select) or die ("Query failed!");
     $row = mysql_fetch_array($result);
     extract($row);

 ?>
    <form method ="post" action="appbooking.php">
<font face= "arial" size="2" font color="black">
<center>
<table width="800" height="150" border="0" cellspacing="0" cellpadding="2">
  <tr>
  <tr>
    <td height="28" colspan="8" valign="middle" bgcolor="#0A25E9"><center>
      <font color="white" size="3" face="Times New Roman" font="font"><b>BOOKING DETAIL</b></font>
    </center>
    </tr>
  <tr>
    <td width="129" align="left" ><font face="Arial" size="2" font color="#000000">Booking No</font></td>
    <td width="291"><input name="bookingno" type="text" value= "<?php echo $row['bookingno']; ?>" size="30" ></td>
    <td width="94" align="left" ><font face="Arial" size="2" font color="#000000">User ID</font></td>
    <td width="270"><input name="username" type="text" id="username" value= "<?php echo $row['username']; ?>" size="30" ></td>
  </tr>
  <tr>
    <td width="129" align="left"><font face="Arial" size="2" font color="#000000"> Name</font></td>
    <td width="291"><input name="name" type="text" id="name" value= "<?php echo $row['name']; ?>"size="45" ></td>
    <td width="94" align="left"><font face="Arial" size="2" font color="#000000">Department</font></td>
    <td><input name="department" type="text" id="department" value= "<?php echo $row['department']; ?>" size="45" >
    </tr>
  <tr>
    <td width="129" align="left" ><font face="Arial" size="2" font color="#000000">Required Date</font></td>
    <td width="291"><input name="u_g_date" type="text" id="g_date" value= "<开发者_如何学运维;?php echo $row['g_date']; ?>" size="30" ></td>
    <td width="94" align="left" ><font face="Arial" size="2" font color="#000000">Required Time</font></td>
    <td><input name="g_time" type="text" id="g_time" value= "<?php echo $row['g_time']; ?>" size="30" ></td>
  </tr>
  <tr>
    <td width="129" align="left" ><font face="Arial" size="2" font color="#000000">Return Date</font></td>
    <td width="291"><input name="u_r_date" type="text" id="r_date" value= "<?php echo $row['r_date']; ?>" size="30" ></td>
    <td width="94" align="left" ><font face="Arial" size="2" font color="#000000">Return Time</font></td>
    <td><input name="r_time" type="text" id="r_time" value= "<?php echo $row['r_time']; ?>" size="30" ></td>
  </tr>
  <tr>
    <td width="129" align="left"><font face="Arial" size="2" font color="#000000">Destination</font></td>
    <td width="291"><input name="u_destination" type="text" id="destination" value= "<?php echo $row['destination']; ?>" size="45" ></td>
    <td width="94" align="left"><font face="Arial" size="2" font color="#000000">Num Of Passengger</font></td>
    <td><input name="pass_num" type="text" id="pass_num" value= "<?php echo $row['pass_num']; ?>" ></td>
  </tr>
  <tr>
    <td width="129" align="left"><font face="Arial" size="2" font color="#000000">Purpose Of Trip</font></td>
    <td width="291"><textarea name="trip_purpose" rows="3" cols="40 " >
           <?php echo $row['trip_purpose']; ?>
           </textarea></td>
  </tr>
  <p>&nbsp;</p>
  <td><p>&nbsp;</p>
  <tr>
   <tr>
        <td height="28" colspan="8" valign="middle" bgcolor="#0A25E9">
        &nbsp;  &nbsp;  &nbsp;  &nbsp; &nbsp;   &nbsp;  &nbsp;  &nbsp;&nbsp;    &nbsp;  &nbsp;  &nbsp; &nbsp;   &nbsp;  &nbsp;  &nbsp; &nbsp; &nbsp;    &nbsp;  &nbsp;  &nbsp;&nbsp;    &nbsp;  &nbsp; &nbsp; &nbsp;    

        <font color="white" size="3" face="Times New Roman"     font="font"><b>APPROVE</b></font>
        &nbsp;  &nbsp;  &nbsp;  &nbsp; &nbsp;   &nbsp;  &nbsp;  &nbsp;&nbsp;    &nbsp;  &nbsp;  &nbsp; &nbsp;   &nbsp;  &nbsp;  &nbsp;&nbsp;&nbsp;  &nbsp;  &nbsp;  &nbsp; &nbsp;   &nbsp;  &nbsp;  &nbsp;  &nbsp;  &nbsp;  &nbsp; &nbsp;   &nbsp;  &nbsp;  &nbsp;&nbsp;    &nbsp;  &nbsp;  &nbsp;  &nbsp;  &nbsp; &nbsp;   &nbsp;  &nbsp;  &nbsp;


        <font color="white" size="3" face="Times New Roman"     font="font"><b>REJECT</b></font>
</td>

  </tr>
  <p>&nbsp;</p>
  <?php
     $db = mysql_connect('localhost','root') 
     or die ("unable to connect");
    mysql_select_db('fyp',$db) or die ("able to select");

    $sql="SELECT * FROM vehicle WHERE v_status='READY'";

     $result = mysql_query($sql) or die ("Query failed!");  
 ?>
  <tr>
  <tr>
    <td>Registration Number 
    <td><select name="regno">
            <option value="" selected>--Registration No--</option>
            <?php while($row = mysql_fetch_array($result)){?>
            <option value="<?php echo $row['regno']; ?>"><?php echo $row['regno']; ?></option>
            <?php } ?>
        </select></td>
    <td>Reason</td>
  <td><textarea name="reason" rows="3" cols="50 "value = ""></textarea></td>
  </tr>
  <?php
     $db = mysql_connect('localhost','root') 
     or die ("unable to connect");
    mysql_select_db('fyp',$db) or die ("able to select");

    $sql="SELECT * FROM driver WHERE d_status='READY'";

     $result = mysql_query($sql) or die ("Query failed!");  
 ?>
  <tr>
    <td>Driver</td>
    <td><select id = "d_name" name="u_d_name">
      <option value="" selected>--Driver Name--</option>
      <?php while($row = mysql_fetch_array($result)){?>
      <option value="<?php echo $row['d_name']; ?>"><?php echo $row['d_name']; ?></option>
      <?php } ?>
    </select></td>
  </tr>
  <tr>
<?php                    
      mysql_close($db);
?>

</table>

(here's the code for the addprocessor)
<?php
   $db = mysql_connect('localhost','root') 
     or die ("unable to connect");
     mysql_select_db('fyp',$db)
     or die ("able to select");

    $bookingno=$_POST['bookingno'];
    $username=$_POST['username'];
    $name=$_POST['name'];
    $department=$_POST['department'];
    $g_date=$_POST['g_date'];
    $r_date=$_POST['r_date'];
    $r_time=$_POST['r_time'];
    $destination=$_POST['destination'];
    $pass_num=$_POST['pass_num'];
    $trip_purpose=$_POST['trip_purpose'];
    $regno=$_POST['regno'];
    $d_name=$_POST['d_name'];
    $reason=$_POST['reason'];


$sql = "INSERT INTO usage VALUES('$bookingno','$username','$name','$department', '$g_date', '$g_time', '$r_date', '$r_time', '$destination', '$pass_num', '$trip_purpose', '$regno', '$d_name', '$reason')";

$result = mysql_query($sql) or die ("error!");
//$result = mysql_query($sql) or die ($query);

echo "<font face = arial size= 3><b>Booking No : </b>".$bookingno."</font>"."<br>";  
echo "<font face = arial size= 3><b>Applicant's ID : </b>".$username."</font>"."<br>";
echo "<font face = arial size= 3><b>Applicant's Name : </b>".$name."</font>"."<br>";
echo "<font face = arial size= 3><b>Department : </b>".$department."</font>"."<br>";
echo "<font face = arial size= 3><b>Required Date : </b>".$g_date."</font>"."<br>";
echo "<font face = arial size= 3><b>Required Time: </b>".$g_time."</font>"."<br>";
echo "<font face = arial size= 3><b>Return Date : </b>".$r_date."</font>"."<br>";
echo "<font face = arial size= 3><b>Return Time : </b>".$r_time."</font>"."<br>";
echo "<font face = arial size= 3><b>Destinantion : </b>".$destination."</font>"."<br>";
echo "<font face = arial size= 3><b>Number Of Passenger : </b>".$pass_num."</font>"."<br>";
echo "<font face = arial size= 3><b>Trip Purpose : </b>".$trip_purpose."</font>"."<br>";
echo "<font face = arial size= 3><b>Registration Number : </b>".$regno."</font>"."<br>";
echo "<font face = arial size= 3><b>Driver Name : </b>".$d_name."</font>"."<br>";
echo "<font face = arial size= 3><b>Reject Reason : </b>".$reason."</font>"."<br>";


mysql_close($db);

echo "<font face = arial size= 4>You have sucessfully record booking details to the database.</font>";  

?>

---

$bookingno=mysql_real_escape_string($_POST['bookingno']);

and so on

Note that

$result = mysql_query($sql) or trigger_error (mysql_error().' in '.$sql); 

call would be much more informative in case of error

---

Try this instead:

$result = mysql_query($sql) or die('Invalid query: ' . mysql_error());

It should give you a better error message.

---

You did'not specify a list of column names. Do you provide values for every column in the table?