my problem is the keyword not working.
<?php
include('connect_login.php');
?>


<div class="post">
<h1>&nbsp;</h1>
<div align="center"></div>
<table width="500" border="1" bordercolor="#9E8C83">
<tr>
<td bordercolor="#864243" bgcolor="#0099FF"><div align="center" class="style4">ID</div></td>
<td width="300" bordercolor="#864243" bgcolor="#0099FF"><div align="center" class="style4">Title</div></td>
<td bordercolor="#864243" bgcolor="#0099FF"><div align="center" class="style4">Student Name</div></td>
</tr><?
$title=$_POST['title'];
$query = "Select * from 'developer' where title='$title'";
$result = mysql_query($query);
while($result_row = mysql_fetch_row($result))
{
$input = $result_row[1];
}
if($input == "")
{ ?>
<meta http-equiv="refresh" content="0; url=searchdb.php" />
<script>window.alert('You have inserted wrong title, please try again ...');</script>

<?
}
else
{
?>

<tr>
<td><? echo $result_row[1]; ?></td>
<td><? echo $result_row[2]; ?></td>
<td><? echo $result_row[4]; ?></td>
</tr>
<?
}
?>
</table>
<table width="500" height="200" border="0" align="center" bordercolor="#9E8C83">
</table>
<div align="center"></div>
</div>
</div>


how to correct the code in order to display the output?

<?php
	include('connect_login.php');
?>

<div class="post">
	<h1>&nbsp;</h1>
<div align="center"></div>
<table width="500" border="1" bordercolor="#9E8C83">
<tr>
<td bordercolor="#864243" bgcolor="#0099FF"><div align="center" class="style4">ID</div></td>
<td width="300" bordercolor="#864243" bgcolor="#0099FF"><div align="center" class="style4">Title</div></td>
<td bordercolor="#864243" bgcolor="#0099FF"><div align="center" class="style4">Student Name</div></td>
</tr>
<?
$title=$_POST['title'];
$query = "Select * from developer where title='$title'";
$result = mysql_query($query);
$num_rows = mysql_num_rows($result);
if($num_rows  > 0){ 
	while($result_row = mysql_fetch_row($result)){
		//$input = $result_row[1];
		$all_data[] = $result_row;
	?>
		<tr>
			<td><? echo $result_row[1]; ?></td>
			<td><? echo $result_row[2]; ?></td>
			<td><? echo $result_row[4]; ?></td>
		</tr> 
	<?
	}
}else{ ?>
	<meta http-equiv="refresh" content="0; url=searchdb.php" />
	<script>window.alert('You have inserted wrong title, please try again ...');</script>
<?
}?>
</table>
</div>
</div>

Basically the code you have is correct.
You have included your configuration,
Extracted you php post variables from $_POST, although you may have to do some escaping but that is along the way.
You have created your query and gotten the result.

It would be good to count the number of rows returned from the query,
if it is more than zero, then write out all the results.
else if it is equal to zero, then you have to do your page redirect, but I dont see any reason why.

You might as well write a no result or no row message on the current page.

Hope this helps.

And please provide some feedback even if it don't.

Thanks.

well, i have started from row 1 due to $title=$_POST['title'];<<<<according to this command has begun from this row. Also, the row zero is id no need to assign because it is auto_increment(auto adding). However, the error are occur;

mysql_fetch_row() : supplied argument is not a valid MySQL result resource

via this line
while($result_row = mysql_fetch_row($result))


thanks for your answer

There is nothing wrong with the command, it is straigth forward, there must be something wrong with you configuration.

Try this command
$result = mysql_query($query) or die('Query failed: ' . mysql_error());
if you dont get any error, then u know that there is something else wrong.

Make sure that you have a database selected, in your config file using.
mysql_select_db('my_database') or die('Could not select database');

also check that the configuration is correct? check for typographical errors.