{

$key='';

$sql="select * from user where uid='$uid'";

$err=send_execute_sql($sql,$res);

if(count($res))

{

$row=$res[0];

$ps=$row['passwd'];

$key=md5($uid.$ps);

}

else

{

return false;

}

return $key;

{

$err=false;

$ar=parse_str($str);

$key=$ar['key'];

$uid=$ar['uid'];

$k=get_key($uid);

if($k==$key)

{

$err=true;

}

return $err;