about resultset internal pointer

in php,mysql_seek can move the pointer, but you have no way to know where the pointer locates currently. i think some function should be added in the future version, like mysql_getPointerPosition($rs) which returns a int as the position in resultset. so it's would be easy to implements some pointer moving functions like mysql_movenext(), mysql_moveprev,mysql_movefirst,mysql_movelast etc.