<form method="post" action="update.php">
<?php
$id = $_POST["id"];
$fname = $_POST["fname"];
$lname = $_POST["lname"];
$query= "SELECT * FROM list ORDER BY id ASC" ;
$result= mysql_query($query);
while($row = mysql_fetch_assoc($result) ){
echo"<input type=\"hidden\" name=\"id\" value=" . $row['id'] . " />";
echo"<input type=\"text\" name=\"fname\" value=" . $row['fname'] . " />";
echo"<input type=\"text\" name=\"lname\" value=" . $row['lname'] . " />";
}
?>
<input type="submit" value="Save Changes" />
<?php
$sql = "UPDATE list SET fname = '{$fname}', lname = '{$lname}' WHERE id = {$id}";
$result = mysql_query( $sql );
?>
</form>