On Wed, Mar 19, 2008 at 11:48 AM, tedd <tedd@xxxxxxxxxxxx> wrote: > Hi gang: > > I have a situation where users can purchase stuff online. > > In the last step in the process, the user clicks a "confirm purchase" > button and their credit card is checked and if it's valid, they are > awarded the product. Everything works, but it takes a little time to > check the credit card. > > During the time it takes to send the credit card information to the > clearing house and get back an "Ok" with a transaction ID, the user > can click the "confirm purchase" button more than once. As such, more > than one order can be made during the process. > > I was thinking of using the database to prohibit multiple "confirm > purchase" clicks made by the user, but I wanted to ask this group if > anyone has a simpler idea/solution? > > Thanks, > > tedd > > -- > ------- > http://sperling.com http://ancientstones.com http://earthstones.com > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > Unique form tokens. Generate a token when the form is displayed and save that value in the session. Then on post check it and remove it. Then if they re-submit it will not exist therefore be invalid. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
