Greetings
In your PHP code just a sample from code before
$db = new sql_db(db_host, db_user, db_password, db_name,false);
$result1 = $db->sql_query($sql_insertinto_table1);
$result2 = $db->sql_query($sql_insertinto_table2);
$result3 = $db->sql_query($sql_insertinto_table3);
Does this meet your requirement,