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copied!<p>This should work: <pre><code>$tid = $_GET['tx']; $auth_token = "zzzzzzzzzzzzzzzzzzzz"; $paypal_url = "www.sandbox.paypal.com"; $url = "https://" . $paypal_url . "/cgi-bin/webscr"; $post_vars = "cmd=_notify-synch&tx=" . $tid . "&at=" . $auth_token; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $post_vars); curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1); curl_setopt($ch, CURLOPT_TIMEOUT, 15); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_HEADER, false); curl_setopt($ch, CURLOPT_USERAGENT, 'cURL/PHP'); $fetched = curl_exec($ch); $lines = explode("\n", $fetched); $keyarray = array(); if (strcmp ($lines[0], "SUCCESS") == 0) { for ($i=1; $i<count($lines);$i++){ list($key,$val) = explode("=", $lines[$i]); $keyarray[urldecode($key)] = urldecode($val); } // check the payment_status is Completed // check that txn_id has not been previously processed // check that receiver_email is your Primary PayPal email // check that payment_amount/payment_currency are correct // process payment $firstname = $keyarray['first_name']; $lastname = $keyarray['last_name']; $itemname = $keyarray['num_cart_items']; $amount = $keyarray['mc_gross']; echo ("<h2>Thank you for your purchase!</h2>"); } else if (strcmp ($lines[0], "FAIL") == 0) { echo ("<h2>Sorry, something went wrong</h2>"); // log for manual investigation } </code></pre> <p>Also $_GET['tx'] look up stops working after ~5 minutes </p>

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