[GENERAL] pg_query transaction: auto rollback? begin or start?? commit or end???

Is this recommended?

pg_query("begin transaction read write;", $connection);
if(pg_transaction_status($connection) == 2) {
pg_query("insert...;", $connection);
pg_query("insert...;", $connection);
pg_query("insert...;", $connection);
}
pg_query("commit transaction;", $connection);
pg_close($connection);

Now *any* error inside transaction will trigger auto rollback for
*all* inserts so I don't need to explicitly issue conditional
rollback? Also is "begin/commit transaction" == "start/end
transaction"??
Cheers, Bill

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