如何从paypal返回客户信息？

I understand this can be done.

Here's what I've tried:

$request = curl_init();

// Set request options
curl_setopt_array($request, array
(
    CURLOPT_URL => 'https://www.paypal.com/cgi-bin/webscr',
    CURLOPT_POST => TRUE,
    CURLOPT_POSTFIELDS => http_build_query(array
    (
        'cmd' => '_notify-synch',
        'tx' => $tx,
        'at' => "xxxxxxxxxxxxxxxxx",
    )),
    CURLOPT_RETURNTRANSFER => TRUE,
    CURLOPT_HEADER => FALSE,
    // CURLOPT_SSL_VERIFYPEER => TRUE,
    // CURLOPT_CAINFO => 'cacert.pem',
));

// Execute request and get response and status code
$response = curl_exec($request);
$status   = curl_getinfo($request, CURLINFO_HTTP_CODE);
var_dump($response);
die();
// Close connection
curl_close($request);

When I send the curl request to https://www.paypal.com/cgi-bin/webscr, I recieve this error:

"FAIL Error: 4003"

When I send it to https://www.sandbox.paypal.com/cgi-bin/webscr, It returns nothing and a status of 0.

My account is sandbox at the moment. I've had this working but it doesn't work anymore.

Can someone please help.

Thanks

Usually, we return customer information only when Paypal calls back the ipn on your website.

You can use:

https://github.com/Quixotix/PHP-PayPal-IPN

For testing, you can use GET to redirect buyers to paypal, something like this:

# redirect to paypal
$redirect = 'https://www'.$addsand.'.paypal.com/cgi-bin/webscr?rm=2&cmd=_xclick&txn_type=express_checkout&no_note=1&no_shipping=1&return='.$return.'&cancel_return='.$cancel_return.'&notify_url='.$notify_url.'&image_url='.$image_url.'&business='.$paypaluser.'&currency_code='.$paypalcurrency.'&amount='.$price.'&mc_gross='.$price.'&item_name='.$product.'&item_number='.$planid.'&custom='.$uid; header("Location: $redirect"); exit();