[英]Integrate PayPal Express Checkout with PHP
如何使用PHP集成Express Checkout? 貝寶(Paypal)在此主題上的文檔非常差。
HTML文件-確保替換商家ID。 另外,我還添加了useraction = commit,以便在彈出的Paypal中顯示付款,而不是有關返回網站以查看付款的消息。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script src="https://code.jquery.com/jquery-3.1.1.min.js" integrity="sha256-hVVnYaiADRTO2PzUGmuLJr8BLUSjGIZsDYGmIJLv2b8=" crossorigin="anonymous"></script>
<script src="https://www.paypalobjects.com/api/checkout.js" async></script>
<input id="amount">
<button id="paypal">Pay by PayPal</i></button>
<script>
window.paypalCheckoutReady = function () {
paypal.checkout.setup('REPLACE WITH MERCHANT ID', {
environment: 'sandbox', # or production
container: '#paypal'
})
$('#paypal').click(function () {
var amount = $('#amount').val()
if (amount) {
paypal.checkout.initXO();
var action = $.post('/paypal.php', {amount: amount});
action.done(function (data) {
paypal.checkout.startFlow('https://www.paypal.com/checkoutnow?useraction=commit&token='+data.TOKEN);
});
action.fail(function () {
paypal.checkout.closeFlow();
});
}
else
alert('Please enter an amount')
})
}
</script>
</body>
</html>
class.php-這是運行paypal api調用的類
<?php
class PayPal
{
private $config;
private $urls = array(
"sandbox" => array(
"api" => "https://api-3t.sandbox.paypal.com/nvp",
"redirect" => "https://www.sandbox.paypal.com/webscr",
),
"live" => array(
"api" => "https://api-3t.paypal.com/nvp",
"redirect" => "https://www.paypal.com/webscr",
)
);
public function __construct($config)
{
$this->config = $config;
}
public function call($options = [])
{
$options = array_merge($options, $this->config);
return $this->_curl($this->api_url(), $options);
}
public function redirect($response)
{
$redirect_url = sprintf("%s?cmd=_express-checkout&token=%s", $this->redirect_url(), $response["TOKEN"]);
header("Location: $redirect_url");
}
private function redirect_url()
{
return $this->urls[$this->config["environment"]]["redirect"];
}
private function api_url()
{
return $this->urls[$this->config["environment"]]["api"];
}
private function _curl($url, $values)
{
$curl = curl_init($url);
$options = array(
CURLOPT_VERBOSE => true,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_POSTFIELDS => http_build_query($values),
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_TIMEOUT => 10,
//CURLOPT_SSL_VERIFYPEER => false //for dev
);
curl_setopt_array($curl, $options);
$rep = curl_exec($curl);
parse_str($rep, $response);
curl_close($curl);
return $response;
}
}
paypal.php-確保將配置替換為paypal帳戶詳細信息。 同樣,該示例不包含任何用於處理cancel.php的代碼-用戶關閉彈出窗口而無需付費時訪問的文件
<?php
include('class.php');
$config = array(
"environment" => "sandbox", # or live
"user" => "REPLACE WITH PAYPAL USER",
"pwd" => "REPLACE WITH PAYPAL PASSWORD",
"signature" => "REPLACE WITH PAYPAL SIGNATURE",
"version" => 113
);
$paypal = new PayPal($config);
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
$result = $paypal->call(array(
'method' => 'SetExpressCheckout',
'paymentrequest_0_paymentaction' => 'sale',
'paymentrequest_0_amt' => $_POST['amount'],
'paymentrequest_0_currencycode' => 'USD',
'returnurl' => 'http://' . $_SERVER['HTTP_HOST'] . dirname($_SERVER['PHP_SELF']) . 'paypal.php?amount=' . $_POST['amount'],
'cancelurl' => 'http://' . $_SERVER['HTTP_HOST'] . dirname($_SERVER['PHP_SELF']) . 'cancel.php?amount=' . $_POST['amount']
));
if ($result['ACK'] == 'Success') {
header("Access-Control-Allow-Origin: *");
header('Content-Type: application/json');
echo json_encode($result);
} else {
echo 'Handle the payment creation failure <br>';
}
} else {
$result = $paypal->call(array(
'method' => 'DoExpressCheckoutPayment',
'token' => $_GET['token'],
'payerid' => $_GET['PayerID'],
'paymentrequest_0_paymentaction' => 'sale',
'paymentrequest_0_amt' => $_GET['amount'],
'paymentrequest_0_currencycode' => 'USD'
));
if ($result['PAYMENTINFO_0_PAYMENTSTATUS'] == 'Completed') {
$result = $paypal->call(array(
'method' => 'GetExpressCheckoutDetails',
'token' => $_GET['token'],
));
//$result now contains customer information
} else {
echo 'Payment error';
}
}
祝好運!
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