paypal即时到账php实现代码

paypal即时到账php实现代码，需要的朋友可以参考下。
http://paypal.ebay.cn/integrationcenter/list__resource_2.html

中文php开发简介：http://www.paypal-china.org/wangzhai/197.html
以下是ecshop中paypal的支付代码

这段代码是向paypal支付接口提交的
{{{

<form target="_blank" method="post" action="https://www.paypal.com/cgi-bin/webscr" style="text-align: center;"><input type="hidden" value="_xclick" name="cmd"/><input type="hidden" value="[email protected]" name="business"/> //商家注册的邮箱
<input type="hidden" value="2009102370175" name="item_name"/><input type="hidden" value="2888.00" name="amount"/><input type="hidden" value="USD" name="currency_code"/><input type="hidden" value="http://127.0.0.1/ecshop/respond.php?code=paypal" name="return"/><input type="hidden" value="3" name="invoice"/><input type="hidden" value="utf-8" name="charset"/><input type="hidden" value="1" name="no_shipping"/><input type="hidden" value="" name="no_note"/><input type="hidden" value="http://127.0.0.1/ecshop/respond.php?code=paypal" name="notify_url"/><input type="hidden" value="2" name="rm"/><input type="hidden" value="http://127.0.0.1/ecshop/" name="cancel_return"/><input type="submit" value="立即使用 paypal 支付"/></form>

}}}

以下是官方提供的，接受到paypal传回来的参数的，并且判断是否支付成功。

支持成功后由于提交表单中有

<input type="hidden" value="http://127.0.0.1/ecshop/respond.php?code=paypal" name="return"/>

paypal将会主动跳转到espond.php?code=paypal这个页面，页面可现实以下POST得到的一些数据。
 

// read the post from PayPal system and add 'cmd' $req = 'cmd=_notify-validate'; foreach ($_POST as $key => $value) { $value = urlencode(stripslashes($value)); $req .= "&$key=$value"; } // post back to PayPal system to validate $header .= "POST /cgi-bin/webscr HTTP/1.0/r/n"; $header .= "Content-Type: application/x-www-form-urlencoded/r/n"; $header .= "Content-Length: " . strlen($req) . "/r/n/r/n"; $fp = fsockopen ('ssl://www.paypal.com', 443, $errno, $errstr, 30); // assign posted variables to local variables $item_name = $_POST['item_name']; $item_number = $_POST['item_number']; $payment_status = $_POST['payment_status']; $payment_amount = $_POST['mc_gross']; $payment_currency = $_POST['mc_currency']; $txn_id = $_POST['txn_id']; $receiver_email = $_POST['receiver_email']; $payer_email = $_POST['payer_email']; if (!$fp) { // HTTP ERROR else { fputs ($fp, $header . $req); while (!feof($fp)) { $res = fgets ($fp, 1024); if (strcmp ($res, "VERIFIED") == 0) { // check the payment_status is Completed // check that txn_id has not been previously processed // check that receiver_email is your Primary PayPal email // check that payment_amount/payment_currency are correct // process payment } else if (strcmp ($res, "INVALID") == 0) { // log for manual investigation } } fclose ($fp); } ?>