+function DB_get_unused_randomnumbers($userstr)
+{
+ $queryresult = mysql_query(" SELECT randomnumbers FROM Game".
+ " WHERE randomnumbers NOT IN".
+ " (SELECT randomnumbers FROM Game".
+ " LEFT JOIN Hand ON Game.id=Hand.game_id".
+ " WHERE user_id IN (". $userstr .")".
+ " GROUP BY randomnumbers".
+ " )");
+
+
+ $r = mysql_fetch_array($queryresult,MYSQL_NUM);
+ if($r)
+ return $r[0];
+ else
+ return "";
+}
+
+function DB_get_number_of_passwords_recovery($user)
+{
+ $queryresult = mysql_query("SELECT COUNT(*) FROM Recovery ".
+ " WHERE user_id=$user ".
+ " AND DATE_SUB(CURDATE(),INTERVAL 1 DAY) <= create_date".
+ " GROUP BY user_id " );
+
+ $r = mysql_fetch_array($queryresult,MYSQL_NUM);
+ if($r)
+ return $r[0];
+ else
+ return 0;
+}
+
+function DB_set_recovery_password($user,$newpw)
+{
+ mysql_query("INSERT INTO Recovery VALUES(NULL,".DB_quote_smart($user).
+ ",".DB_quote_smart($newpw).",NULL)");
+
+ return;
+}
+
+function DB_get_card_name($card)
+{
+ $queryresult = mysql_query("SELECT strength,suite FROM Card WHERE id='$card'");
+
+ $r = mysql_fetch_array($queryresult,MYSQL_NUM);
+ if($r)
+ return $r[0]." of ".$r[1];
+ else
+ return "Error during get_card_name ".$card;
+}
+
+function DB_get_current_playid($gameid)
+{
+ $trick = DB_get_max_trickid($gameid);
+
+ if(!$trick) return NULL;
+
+ $queryresult = mysql_query("SELECT id FROM Play WHERE trick_id='$trick' ORDER BY create_date DESC LIMIT 1");
+
+ $r = mysql_fetch_array($queryresult,MYSQL_NUM);
+ if($r)
+ return $r[0];
+
+ return "";
+}
+
+function DB_get_call_by_hash($hash)
+{
+ $queryresult = mysql_query("SELECT point_call FROM Hand WHERE hash='$hash'");
+
+ $r = mysql_fetch_array($queryresult,MYSQL_NUM);
+ if($r)
+ return $r[0];
+
+ return NULL;
+}
+
+function DB_get_partner_call_by_hash($hash)
+{
+ $partner = DB_get_partner_hash_by_hash($hash);
+
+ if($partner)
+ {
+ $queryresult = mysql_query("SELECT point_call FROM Hand WHERE hash='$partner'");
+
+ $r = mysql_fetch_array($queryresult,MYSQL_NUM);
+ if($r)
+ return $r[0];
+ }
+
+ return NULL;
+}
+
+function DB_get_partner_hash_by_hash($hash)
+{
+ $gameid = DB_get_gameid_by_hash($hash);
+ $party = DB_get_party_by_hash($hash);
+
+ $queryresult = mysql_query("SELECT hash FROM Hand WHERE game_id='$gameid' AND party='$party' AND hash<>'$hash'");
+
+ $r = mysql_fetch_array($queryresult,MYSQL_NUM);
+ if($r)
+ return $r[0];
+
+ return NULL;
+}
+
+function DB_format_gameid($gameid)
+{
+ $session = DB_get_session_by_gameid($gameid);
+
+ /* get number of game */
+ $result = mysql_query("SELECT COUNT(*),create_date FROM Game".
+ " WHERE session='$session' ".
+ " AND TIMEDIFF(create_date, (SELECT create_date FROM Game WHERE id='$gameid'))<=0 ".
+ " GROUP by session");
+ $r = mysql_fetch_array($result,MYSQL_NUM);
+
+ return $session.".".$r[0];
+}
+