[Alvitr]

PHP код:

mysql_format(g_SQL, query, sizeof(query), "UPDATE `houses` SET `OwnerCheck` = 1, `Locked` = 1, `OwnerName` = '%s'", GetName(playerid)); 


might be wrong cause it will update to all rows in table

you have to add

WHERE `house_id_field_name` = '%d'

like

PHP код:

mysql_format(g_SQL, query, sizeof(query), "UPDATE `houses` SET `OwnerCheck` = 1, `Locked` = 1, `OwnerName` = '%s' WHERE `house_id_field_name` = '%d'", GetName(playerid), i);
//or change i that is you use to house id 


if you haven't that var of house_id in mysql,
create it and load it when load houses and create house