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PHP

Alan Mattanó
PLUS
Alan Mattanó
Courses Plus Student 12,188 Points
Posted by Alan Mattanó
Alan Mattanó
Courses Plus Student 12,188 Points

Why PayPal Auto Return url (back to site) after 10sec is different from link url option at the end of transaction

I just want to point out and advice other that the Paypal auto return URL is different from the link. So for example if a client at the end of the transaction just wait the 10 seconds, then the URL will be for example:

yoursite.com/paypal/process.php?tx=78B411&st=Completed&amt=2%2e00&cc=USD&item_number=1-7NKG7WK

And instead if the client click the link at the end of the transaction, it will be:

yoursite.com/paypal/process.php?tx=78B411&st=completed&amt=2%2e00&cc=usd&item_number=8%7nkg7wk

So looking in the arry will be:

// auto retun 10sec
Array ( [tx] => 78B411 [st] => Completed [amt] => 2.00 [cc] => USD [item_number] => 1-7NKG7WK )

// auto retun link
Array ( [tx] => 78b411 [st] => completed [amt] => 2.00 [cc] => usd [item_number] => 1-7nkg7wk )

What I want to point out is that if you make a if to control the information:

if ( $cc == "USD" ) { // payment completed

or

if ( $item_number == "1-7NKG7WK" ) { // payment completed

You can fail because cc can be usd and item_number can be 1-7nkg7wk . How to resolve this?

Do i need to use only :

$cc = strtoupper($cc);

To convert all the info to uppercase? or I'm messing something else? thx.