inserting data into two tables?

Question

im using mysql, these are two tables i have:

posts {id, user_id, post, date}
post_tags {id, tag, post_id(references id in post), user_id}

what im trying to do is if the post has a #tag , i insert the intial post in the POSTS table, and the data in the post_tags table, how could i do that simlateanously?

P.S. i already know how to check if a post has a tag!! i just want to undertand, how can insert data into both!! espcially the ID's because they are generated within mysql(autoincrement)!!

Answer 1

You can use trigger for this.

Answer 2

You can seperate these two queries and run them after each other. You can use mysql_insert_id() for the last inserted id in an table.

$query = "INSERT INTO posts (id, user_id, post, date)
    VALUES (id, user_id, post, date)";
mysql_query($query) or die(mysql_error().$query); // run query

$lastid = mysql_insert_id(); // this will get the last inserted id.

$query = "INSERT INTO post_tags (id, tag, post_id, user_id)
    VALUES (id, tag, ".$lastid.", user_id)";
mysql_query($query) or die(mysql_error().$query); // run query