Parse error: syntax error, unexpected T_VARIABLE, expecting T_WHILE

[xester]

im facing this issue on one of my scripts,

can you people help me out?

   }
        $query = "select stid, user_name, full_name from ".DB_PREFIX."staff where user_name=\"".$username."\" and authentication=md5(\"".$password."\")";
        return $this->dbCon->query_exec( $query );
    }
 

[bradgrafelman]

It's impossible to tell for sure what the issue is with only those few of lines (including a few more above those might be more helpful).

[xester]

    function validate_staff( $username, $password )
    {
        $query = "select stid,session_time from ".DB_PREFIX."staff";
        $res = $this->dbCon->query_exec( $query );
        do
        {
            if ( !$res || !( $row = $this->dbCon->fetch_result( $res ) ) )
            {
                $sess_tm = $row['session_time'] == "" ? 3600 : 60 * $row['session_time'];
                $query = "select last,sessionid from ".DB_PREFIX."sessions where user=".$row['stid'];
                $last_sess = $this->dbCon->query_exec( $query );
                $sess_timeout = time( ) - $sess_tm;
                do
                {
                } while ( !( $last_session = $this->dbCon->fetch_result( $last_sess ) ) );
                if ( $last_session['last'] < $sess_timeout )
                {
                    $query = "delete from ".DB_PREFIX."sessions where sessionid=\"".$last_session['sessionid']."\"";
                    $this->dbCon->query_exec( $query );
                }
            } while ( 1 );
        }
        $query = "select stid, user_name, full_name from ".DB_PREFIX."staff where user_name='$username' and authentication=md5('$password')";
        return $this->dbCon->query_exec( $query );
    }

Entire function

[bradgrafelman]

Why do you have a 'while ( 1 );' after an if() block?

EDIT: Ah, I think you've matched that up with the wrong brace; the next closing brace is the end of the incomplete 'do' structure.