mysql_fetch_array() verwacht dat parameter 1 resource is, string gegeven

Je geeft door in $query wat is uw sql-tekenreeks , wanneer je moet slagen in $result wat uw db-resultaatobject is.

class DBQueries extends DBConn {
    function displayUsers(){
        $this->dbConnection();
        $query = "SELECT * FROM users";
        $result = mysql_query($query);
        while ($row = mysql_fetch_array($result)) {
            echo $row['password'];
        }
    }
}