Starting and Ending Transactions

Following the spirit of atomic operations, I found a link on starting and ending a transaction.

http://stackoverflow.com/questions/12091971/how-to-start-and-end-transaction-in-mysqli

And this might be a good link for figuring out where to place the commit statement when using prepared statements.

http://stackoverflow.com/questions/10642635/how-can-i-use-prepared-statements-combined-with-transactions-with-php