'_xclick', 'business' => 'your@emailaddress.net', 'cert_id' => 'SD3DG5FFF1234', 'lc' => 'US', 'custom' => 'test', 'invoice' => '', 'currency_code' => 'USD', 'no_shipping' => '1', 'item_name' => 'Donation', 'item_number' => '1', 'amount' => '10' ); $encrypted = paypal_encrypt($form); function paypal_encrypt($hash) { //Sample PayPal Button Encryption: Copyright 2006,2007 StellarWebSolutions.com //Not for resale - license agreement at //http://www.stellarwebsolutions.com/en/eula.php global $MY_KEY_FILE; global $MY_CERT_FILE; global $PAYPAL_CERT_FILE; global $OPENSSL; if (!file_exists($MY_KEY_FILE)) { echo "ERROR: MY_KEY_FILE $MY_KEY_FILE not found\n"; } if (!file_exists($MY_CERT_FILE)) { echo "ERROR: MY_CERT_FILE $MY_CERT_FILE not found\n"; } if (!file_exists($PAYPAL_CERT_FILE)) { echo "ERROR: PAYPAL_CERT_FILE $PAYPAL_CERT_FILE not found\n"; } if (!file_exists($OPENSSL)) { echo "ERROR: OPENSSL $OPENSSL not found\n"; } //Assign Build Notation for PayPal Support $hash['bn']= 'StellarWebSolutions.PHP_EWP'; $openssl_cmd = "$OPENSSL smime -sign -signer $MY_CERT_FILE -inkey $MY_KEY_FILE " . "-outform der -nodetach -binary | $OPENSSL smime -encrypt " . "-des3 -binary -outform pem $PAYPAL_CERT_FILE"; $descriptors = array( 0 => array("pipe", "r"), 1 => array("pipe", "w"), ); $process = proc_open($openssl_cmd, $descriptors, $pipes); if (is_resource($process)) { foreach ($hash as $key => $value) { if ($value != "") { //echo "Adding to blob: $key=$value\n"; fwrite($pipes[0], "$key=$value\n"); } } fflush($pipes[0]); fclose($pipes[0]); $output = ""; while (!feof($pipes[1])) { $output .= fgets($pipes[1]); } //echo $output; fclose($pipes[1]); $return_value = proc_close($process); return $output; } return "ERROR"; }; ?> PHP Sample Donation using PayPal Encrypted Buttons

Sample Donation Page

This page uses encrypted PayPal buttons for your security.

(PayPal will open in a new window for demonstration purposes.)