[xMoBi]

You will need to use SQL database and store the clan ID in the player table. and make a separate table for clans. When player connect and has logged in, check if the player clan is valid or not, if it is not valid, make the clan id in his stats to 0/ invalid and if it is valid, give that player the clan tag fetched from the database or the script variables. this can also be done with other saving systems but it will be too slow.