[Xenon]

you're welcome

if you have fields with identical names you shouldn't use the * use explicit names instead:

$threads=$DB_site->query("SELECT thread.threadid, thread.title,reqdata.title AS reqtitle FROM thread LEFT JOIN reqdata USING(threadid) WHERE ...

as you can see, the field title in table reqdata can be accesed throug $thread[reqtitle].

you can use the AS operator whenever you have two fields with same names to rename on of them