我想在用户付款后从paypal获取用户ID.
Pay.php
<form action="https://www.paypal.com/cgi-bin/webscr" method="post">
<input type="hidden" name="cmd" value="_xclick">
<input type="hidden" name="business" value="<?php echo $merchant_email ?>">
<input type="hidden" name="item_name" value="IPN test">
<input type="hidden" name="item_number" value="1">
<input type="hidden" name="amount" value="0.01">
<input type="hidden" name="notify_url" value="<?php echo $ipn_url ?>">
<input type="hidden" name="return" value="<?php echo $return_url ?>">
<input type="hidden" name="cancel_return" value="<?php echo $cancel_url ?>">
<input type="hidden" name="userid" value="888">
<input type="hidden" name="currency_code" value="USD">
<input type="image" src="https://www.paypal.com/en_US/i/btn/x-click-but23.gif"
border="0" name="submit" alt="Buy Now">
所以我会在我的paypal帐户中启用ipn并指向http://www.domain.com/ipn.php？
在ipn.php代码中
<?php
$userid = $_POST['userid'];
$qry = "INSERT into mypayments(userid) VALUES ('$userid') …