问如何在贝宝的notify_url页面中获取交易明细

EN

<form action="https://www.sandbox.paypal.com/cgi-bin/webscr" method="POST" name="_xclick" id="paypal_form">
<input type="hidden" name="upload" value="1" />
<input type="hidden" name="cmd" value="_xclick" />
<!-- The business email address, where you want to receive the payment -->
<!--<input type="hidden" name="business" value="yesidealpayment@gmail.com" />-->
<input type="hidden" name="business" value="arun_1260247381_per@galtechsupport.us" />
<!-- The customer email address -->

<input type="hidden" name="item_name_1" value="<?php echo ucfirst($couponname); ?>" />

<input type="hidden" name="amount_1" value="<?php echo $total_payable_amount; ?>" />
<!--<input type="hidden" name="currency_code" value="AUD" />-->
<input type="hidden" name="currency_code" value="USD" />

<input type="hidden" name="amount" value="25.58" /> 
<!-- Where you want to return after PayPal Payment -->
<input type="hidden" name="return" value="http://yes-i-deal.com.au/test/paypal_ipn.php" />
<!-- A back-end notification send to the specific page after successful payment  -->
<!--<input type="hidden" name="notify_url" value="http://yes-i-deal.com.au/test/paypal.php" />-->
<input type="hidden" name="notify_url" value="http://yes-i-deal.com.au/test/paypal_ipn.php" />
<!-- Where you want to return after cancel the PayPal Payment  -->
<input type="hidden" name="cancel_return" value="http://yes-i-deal.com.au/" />
<input type="hidden" name="custom" value="<?php echo $coupon_id."_".$userid;?>" />  




            <input type="image" name="submit"   src="http://yes-i-deal.com.au/themes/green/images/Buy-Now-Button.png" />
</form> 

 session_start(); 
require("ipn_cls1.php");
 $paypal_info = $_POST; 
print_r($paypal_info); 
$paypal_ipn = new paypal_ipn($paypal_info); 
$payment_status = trim($paypal_info['payment_status']); // Si Completed : tout est OK echo 
$payment_amount = trim($paypal_info['mc_gross']);