PHP / MySQL allowing the current user to modify his account information

I have created 2 pages

update.php
edit.php

We start on edit.php so here is edit.php's script

<?php
session_start();
$id = $_SESSION["id"];
$username = $_POST["username"];
$fname = $_POST["fname"];
$password = $_POST["password"];
$email = $_POST["email"];

mysql_connect('mysql13.000webhost.com', 'a2670376_Users', 'Password') or     die(mysql_error());
echo "MySQL Connection Established! <br>";

mysql_select_db("a2670376_Pass") or die(mysql_error());
echo "Database Found! <br>";

$query = "UPDATE members SET username = '$username', fname = '$fname',
password = '$password' WHERE id = '$id'";

$res = mysql_query($query);

if ($res)
echo "<p>Record Updated<p>";
else
echo "Problem updating record. MySQL Error: " . mysql_error();
?>

<form action="update.php" method="post">
<input type="hidden" name="id" value="<?=$id;?>">
ScreenName:<br> <input type='text' name='username' id='username' maxlength='25'   style='width:247px' name="username" value="<?=$username;?>"/><br>
FullName:<br> <input type='text' name='fname' id='fname' maxlength='20' style='width:248px'     name="ud_img" value="<?=$fname;?>"/><br>
Email:<br> <input type='text' name='email' id='email' maxlength='50' style='width:250px'    name="ud_img" value="<?=$email;?>"/><br>
Password:<br> <input type='text' name='password' id='password' maxlength='25'     style='width:251px' value="<?=$password;?>"/><br>
<input type="Submit">
</form>

Now here is the update.php page where I am having the major problem

<?php
session_start();
mysql_connect('mysql13.000webhost.com', 'a2670376_Users', 'Password') or   die(mysql_error());
mysql_select_db("a2670376_Pass") or die(mysql_error());

$id = (int)$_SESSION["id"];

$username = mysql_real_escape_string($_POST["username"]);
$fname = mysql_real_escape_string($_POST["fname"]);
$email = mysql_real_escape_string($_POST["email"]);
$password = mysql_real_escape_string($_POST["password"]);

$query="UPDATE members
SET username = '$username', fname = '$fname', email = '$email', password = '$password'
WHERE id='$id'";

mysql_query($query)or die(mysql_error());
if(mysql_affected_rows()>=1){
echo "<p>($id) Record Updated<p>";
}else{
echo "<p>($id) Not Updated<p>";
}
?>

Now on edit.php I fill out the form to edit the account "test" while I am logged into it now once the form if filled out I click on Submit button and it takes me to update.php and it returns this

(0) Not Updated  

(0) <= id of user logged in

Not Updated <= MySql Error from  

mysql_query($query)or die(mysql_error());
if(mysql_affected_rows()>=1){

I want it to update the user logged in and if I am not mistaken in this script it says

  $id = (int)$_SESSION["id"];

which updates the user with the id of the person who is logged in

but it isn't updating, its saying that no tables were effected

if it helps here's my MySQL Database picture just click here http://i50.tinypic.com/21juqfq.png

if this could possibly be any help to find the solution I have 2 more files delete.php and delete_ac.php they have can remove users from my sql database and they show the user id and it works there are no bugs in this script at all PLEASE DO NOT MAKE SUGGESTIONS FOR THE SCRIPTS BELOW delete.php first

    <?php

$host="mysql13.000webhost.com"; // Host name
$username="a2670376_Users"; // Mysql username
$password="PASSWORD"; // Mysql password
$db_name="a2670376_Pass"; // Database name
$tbl_name="members"; // Table name 

// Connect to server and select database.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

// select record from mysql
$sql="SELECT * FROM $tbl_name";
$result=mysql_query($sql);
?>

<table border="0" cellpadding="3" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<td colspan="8" style="bgcolor: #FFFFFF"><strong><img src="http://i47.tinypic.com/u6ihk.png" height="30" widht="30">Delete data in mysql</strong> </td>
</tr>

<tr>
<td align="center" bgcolor="#FFFFFF"><strong>Id</strong></td>
<td align="center" bgcolor="#FFFFFF"><strong>UserName</strong></td>
<td align="center" bgcolor="#FFFFFF"><strong>FullName</strong></td>
<td align="center" bgcolor="#FFFFFF"><strong>Password</strong></td>
<td align="center" bgcolor="#FFFFFF"><strong>Email</strong></td>
<td align="center" bgcolor="#FFFFFF"><strong>Date</strong></td>
<td align="center" bgcolor="#FFFFFF"><strong>Ip</strong></td>
<td align="center" bgcolor="#FFFFFF"> </td>
</tr>

<?php
while($rows=mysql_fetch_array($result)){
?>

<tr>
<td bgcolor="#FFFFFF"><? echo $rows['id']; ?></td>
<td bgcolor="#FFFFFF"><? echo $rows['username']; ?></td>
<td bgcolor="#FFFFFF"><? echo $rows['fname']; ?></td>
<td bgcolor="#FFFFFF"><? echo $rows['password']; ?></td>
<td bgcolor="#FFFFFF"><? echo $rows['email']; ?></td>
<td bgcolor="#FFFFFF"><? echo $rows['date']; ?></td>
<td bgcolor="#FFFFFF"><? echo $rows['ip']; ?></td>
<td bgcolor="#FFFFFF"><a href="delete_ac.php?id=<? echo $rows['id']; ?>">delete</a></td>
</tr>

<?php
// close while loop
}
?>

</table>

<?php
// close connection;
sql_close();
?>

and now delete_ac.php

<table width="500" border="0" cellpadding="3" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<td colspan="8" bgcolor="#FFFFFF"><strong><img src="http://t2.gstatic.com/images?           q=tbn:ANd9GcS_kwpNSSt3UuBHxq5zhkJQAlPnaXyePaw07R652f4StmvIQAAf6g" height="30"     widht="30">Removal Of Account</strong> </td>
</tr>

<tr>
<td align="center" bgcolor="#FFFFFF">
<?php

$host="mysql13.000webhost.com"; // Host name
$username="a2670376_Users"; // Mysql username
$password="javascript00"; // Mysql password
$db_name="a2670376_Pass"; // Database name
$tbl_name="members"; // Table name 

// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

// get value of id that sent from address bar
$id=$_GET['id'];

// Delete data in mysql from row that has this id
$sql="DELETE FROM $tbl_name WHERE id='$id'";
$result=mysql_query($sql);

// if successfully deleted
if($result){
echo "Deleted Successfully";
echo "<BR>";
echo "<a href='delete.php'>Back to main page</a>";
}

else {
echo "ERROR";
}
?> 

<?php
// close connection
mysql_close();
?>
</td>
</tr>
</table>

---

Try below query, and post output here. Also execute same echo query in phpmyadmin to see what happend.

echo $query="UPDATE members
SET username = '$username', fname = '$fname', email = '$email', password = '$password'
WHERE id=$id";

From your link it seems anyone can directly go to edit page, that is wrong.

You need to add condition that if user is login then only he can update his profile.