PayPal Instant Payment Notification

[fearan]

Hi,

I am a PHP newbie and am in dire need of help 🙂 I want to make a script for the PayPal Instant Payment Notification. I've found only a bit of info on how to do this in PHP, which wasn't much help.

I am wondering if anyone could post information on which functions I need to use to do the following:

Quote from PayPal.com: "--Once your server has received the Instant Payment Notification, you will need to confirm it by constructing an HTTP POST to PayPal. Your POST should be sent to "https://www.paypal.com/cgi-bin/webscr"

You must post all of the form variables you received exactly as you received them. You will also need to append a variable named "cmd" with the value "notify-validate" (e.g. cmd=notify-validate) to the POST string.--"

What I am thinking of doing is braking up the $HTTP_POST_VARS (is the $HTTP_POST_VARS an array?) to get all of the variables, then I will put it in my database, after that is my problem, how do I sent back the $HTTP_POST_VARS + _notify-validate back to the server?

When I am done this script I will dedicated a part of my site to this script, so other people can benefit from it.

Thank You!
Fearan

[tasistro]

Check out CURL
Something like this will work
<?
// Create a string with all the post variables ($HTTP_POST_VARS)

$postparams='variable1=1';
$postparams=$postparams.'&variable2=2';
$postparams=$postparams.'&variable3=3';
$postparams=$postparams.'&variable4=4';

// Create the string for the shell call

// Note the use of the curl command
// Check out the man pages for curl

$targeturl = '/usr/local/curl/bin/curl -u yourUserName:yourPassword -d "'.$targeturl.'" https://yourTargetURLHere_mostSurelyAPayPalDomainAddress';

// Actually execute the call
$output = $targeturl;

// output now holds the html page pay pall sent you, you can now parse it for the desired results

Saludos
Gerardo