if (!$link = mysql_connect('localhost', 'db', 'pass')) {
echo 'Could not connect to mysql';
exit;
}
if (!mysql_select_db('db', $link)) {
echo 'Could not select database';
exit;
}
echo $username="$_POST[username]" . "<br/>";
echo $newimage = $_FILES['uploaded']['name'] ;
echo $oldimage = "$_POST[imagename];". "<br/>";
mysql_query("UPDATE members SET image1='$newimage' WHERE username='$username' AND image1='$oldimage'");