Possible to add data into 2 tables in 1 query?

[HakkieDEV]

Well, I would like to add the same data into 2 tables in just 1 query.

Is this possible or should I use 2 querys?

I tried to do something like:

$DB_site->query("INSERT INTO tablename1, tablename2 (threadid,userid,username,customfield1,customfield 2) VALUES('".$threadinfo['threadid']."','".$bbuserinfo['userid']."','".$customfield1."','".$customfield2."')");

But that didn't work.