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PHP and PayPal's returned $_POST variables - how to match variables to strings?

Dionysus asked
Medium Priority
Last Modified: 2008-03-17
I am testing a system and I am at the point where I've made the (test) purchase and PayPal has sent me back to my return page with a long string of variables in the following format :


Now I've taken this and assigned it to a variable:

$req = 'cmd=_notify-validate';

foreach ($_POST as $key => $value) {
$value = urlencode(stripslashes($value));
$req .= "&$key=$value";

So far so good... now I tried to split the string so I could get 2 key/value pairs isolated. I want the payer_email and the payment_status separated from the rest, so I started with the following:

$postarray = explode("&", $req);

Now the problem is, how do I split it again and do a test for $postarray['payment_status']?

I can try and isolate the pairs using $postarray[14] but I'd like to specify by name in case the order of variables changes at some point in the future...

Can anyone help?


Watch Question


Woops..I got it backwards... but my end question is the same.

I received a POST from PayPal, and using that code, created that long string.  Now I need to know how to break it down further as I said previously.

Not sure I understand you correctly. but here is a try:

$totalstring = "cmd=_notify-validate&payment_date=18%3A20%3A11+Mar+21%2C+2006+PST&txn_type=web_accept"

$pair_array = explode( "&", $totalstring );
for ( $i=0; $i<count($pair_array; $i++ ) {
    $pair_array[$i] = explode( "=", $pair_array[$i] );
    ${$pair_array[$i][0]} = urldecode( str_replace( '+', ' ', $pair_array[$i][1] ) );   // turn %NN codes to characters and '+' to ' '
// now each field in the parameter string can be adressed by it name:
echo ">'$payment_status'<";

regards JakobA

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Thanks man.. the only thing is that you had missed a closing bracket.. but apart from that.. you did exactly what I wanted.

Take care!
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