Inserting user updates into SQL with PHP - php

Question

I think I am really close now - there are no more nasty Orange boxes with errors in - the only problem I can see at the moment is that once I update the table (after the
$qry = "UPDATE 'members' ('employer', 'flat') WHERE login='$login_name' VALUES ". " ('$employ', $address')";
) I get the message "No rows updated" echo to the screen!
Any ideas what the problem is?
Thanks.
<?php
//Start session
session_start();
$_SESSION['SESS_LOGIN'];
//Include database connection details
require_once('config.php');
//Array to store validation errors
$errmsg_arr = array();
//Validation error flag
$errflag = false;
//Connect to mysql server
$link = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD);
if(!$link) {
die('Failed to connect to server: ' . mysql_error());
}
//Select database
$db = mysql_select_db(DB_DATABASE);
if(!$db) {
die("Unable to select database");
}
//Function to sanitize values received from the form. Prevents SQL injection
function clean($str) {
$str = #trim($str);
if(get_magic_quotes_gpc()) {
$str = stripslashes($str);
}
return mysql_real_escape_string($str);
}
//Sanitize the POST values
$employ = clean($_POST['employer']);
$address = clean($_POST['flat']);
?>
<?Php
//Insert employer and address into database row for logged in user.
$login_name = $_POST['login_name'] ;
$qry = "UPDATE 'members' ('employer', 'flat') WHERE login='$login_name' VALUES ". " ('$employ', $address')" ;
$result = #mysql_query($link, $qry);
//Check whether the query was successful or not
if(!$result) {
echo "No rows updated";
exit();
}else {
echo "Success";
}
?>

Answer 1

Don't use VALUES, use SET:
"UPDATE `members` SET `employer` = '".$employ."', `flat` = '".$address."' WHERE `login`='".$login_name."'"

Answer 2

First of all you should not suppress error messages by using the # opperator if you are looking for issues in your code. Also you are using the wrong parentheses (' instead of `). The rest of your code looks fine. maybe you need to give us some info about the database structure otherwise