multiple paypal donate button

I am building a web site for an organisation. The organisation can create as many programs as they want. Each program should have a paypal donate button. when creating a program, a paypal donate button can be inserted automatically (something like {donate_button: label } ).

i want to keep track of each program donation fees.

So i need somehow to know what program a donor donate to so then i can make a report about fee for each program.

Am not so sure how to get this done properly. is it possible to add some parameters in the donate paypal button dynamically ? if posible 开发者_如何学C, is there any problem regarding to security ?

Can paypal donate button be created dynamically ?

I am very appreciated for all of you .

Thanks

Am sorry for my bad English.

I'd suggest looking at Instant Payment Notification (IPN) and 'custom' to pass the name of the organisation on to PayPal.
Simply include the following in your existing button code

<input type="hidden" name="notify_url" value="link to IPN script">
<input type="hidden" name="custom" value="name of organisation / other unique identifier">

and read the IPN POST for the 'custom' parameter when it comes through.

There's additional documentation and some sample code at https://www.paypal.com/ipn