calling all php and mysql guru's

[CP,]

This is the test data in my contacts table as you can see: http://www.photo-host.org/img/958319table.jpg

ive inserted this, is this correct?:

$result = mysql_query("SELECT * FROM 'contacts' WHERE 'member_id' = " . $member_id . " LIMIT 1");
$row = mysql_fetch_assoc($result);

contacts is the table and member_id is the member id which auto increments as a new user registers.

I can login in fine with this error on top:

Warning: mysql_fetch_assoc(): supplied argument is not a valid MySQL result resource in e:\webareas\am663\carttest\login.php on line 8

EDIT: I added the "@" in front of mysql_fetch_assoc($result); which seemed to have removed the error message but when i call the data from the db e.g. echo $row['$member_id'];
echo $row['$username']; nothing shows up on my members page?