paypal支付交易数据
paypal支付交易成功后返回的对象中就有交易信息(包括支付交易ID，支付金额，支付人信息，收款人信息等)，同时如果你开启了消息通知paypal会同时给你推送一条差不多内容的交易信息。
支付成功返回数据：
我们在调paypal支付接口(execute)接口支付成功或者失败paypal返回的数据。
id：为本次的数据ID，唯一。
payer：付款人的信息。
transations：支付交易信息。
transations.amount：支付金额信息，总价，税费，运费等。
transations.item_list：商品信息。
transations.shipping_address：收货地址信息。
transations.related_resources：里面就是收款人的信息。
transations.related_resources.state：这个状态就是收款人的交易状态，只要是completed就表示我们收到了钱，钱到账了就什么都好说了，交易成功。
{
"id": "PAY-1BV5911839643144YKSCUA7Q",
"create_time": "2014-12-08T06:09:02Z",
"update_time": "2014-12-08T06:10:51Z",
"state": "approved",
"intent": "sale",
"payer": {
"payment_method": "paypal",
"payer_info": {
"email": "[email protected]",
"first_name": "Test",
"last_name": "Buyer",
"payer_id": "JARYJK2TES6C6",
"shipping_address": {
"line1": "NO 1 Nan Jin Road",
"city": "Shanghai",
"state": "Shanghai",
"postal_code": "200000",
"country_code": "CN",
"recipient_name": "Buyer Test"
}
}
},
"transactions": [
{
"amount": {
"total": "20.00",
"currency": "USD",
"details": {
"subtotal": "17.50",
"tax": "1.30",
"shipping": "1.20"
}
},
"description": "Payment description",
"item_list": {
"items": [
{
"name": "Ground Coffee 40 oz",
"price": "7.50",
"currency": "USD",
"quantity": "1"
},
{
"name": "Granola bars",
"price": "2.00",
"currency": "USD",
"quantity": "5"
}
],
"shipping_address": {
"recipient_name": "Buyer Test",
"line1": "NO 1 Nan Jin Road",
"city": "Shanghai",
"state": "Shanghai",
"postal_code": "200000",
"country_code": "CN"
}
},
"related_resources": [
{
"sale": {
"id": "74V52932AB811673C",
"create_time": "2014-12-08T06:09:02Z",
"update_time": "2014-12-08T06:10:51Z",
"amount": {
"total": "20.00",
"currency": "USD"
},
"payment_mode": "INSTANT_TRANSFER",
"state": "completed",
"protection_eligibility": "ELIGIBLE",
"protection_eligibility_type": "ITEM_NOT_RECEIVED_ELIGIBLE,UNAUTHORIZED_PAYMENT_ELIGIBLE",
"parent_payment": "PAY-1BV5911839643144YKSCUA7Q",
"links": [
{
"href": "https://api.sandbox.paypal.com/v1/payments/sale/74V52932AB811673C",
"rel": "self",
"method": "GET"
},
{
"href": "https://api.sandbox.paypal.com/v1/payments/sale/74V52932AB811673C/refund",
"rel": "refund",
"method": "POST"
},
{
"href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-1BV5911839643144YKSCUA7Q",
"rel": "parent_payment",
"method": "GET"
}
]
}
}
]
}
],
"links": [
{
"href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-1BV5911839643144YKSCUA7Q",
"rel": "self",
"method": "GET"
}
]
}同时服务器会收到ipn消息， 类似：
支付成功后paypal会同时往我们卖家账号那里配置的消息通知url推送一条消息数据，数据和支付成功大致一样。
由于paypal推送消息不止一次，正常情况下如果是 completed并且用户收到信息就不会再推了，如果推送失败或者交易状态发生改变，比如出现资金冻结，发起退款等事情的时候，paypal的就会有多次推送了，那么我们要怎样判断是第一次推送还是多次推送呢？
查看数据我们发现数据中有交易号txn_id，如果出现多次推送就会多出一个属性parent_txn_id，这个就是原始交易ID，所以我们可以判断有没有这个属性，这个属性有没有值来确定是第一次还是第二次推送。
array (
'act' => 'ipn',
'mc_gross' => '20.00',
'invoice' => '548531d624f59',
'protection_eligibility' => 'Eligible',
'address_status' => 'unconfirmed',
'item_number1' => '',
'tax' => '1.30',
'item_number2' => '',
'payer_id' => 'JARYJK2TES6C6',
'address_street' => 'NO 1 Nan Jin Road',
'payment_date' => '21:04:35 Dec 07, 2014 PST',
'payment_status' => 'Completed',
'charset' => 'gb2312',
'address_zip' => '200000',
'mc_shipping' => '1.20',
'mc_handling' => '0.00',
'first_name' => 'Test',
'mc_fee' => '0.98',
'address_country_code' => 'CN',
'address_name' => 'Buyer Test',
'notify_version' => '3.8',
'custom' => '',
'payer_status' => 'unverified',
'address_country' => 'China',
'num_cart_items' => '2',
'mc_handling1' => '0.00',
'mc_handling2' => '0.00',
'address_city' => 'Shanghai',
'verify_sign' => 'AomRS5l2W2xlt2An.GaSrAzpCl-NACIvh3Pz0HtrSBZzfcIeqDPGrXSk',
'payer_email' => '[email protected]',
'mc_shipping1' => '0.00',
'mc_shipping2' => '0.00',
'tax1' => '0.00',
'tax2' => '0.00',
'txn_id' => '5CS19517SJ894934R',
'payment_type' => 'instant',
'last_name' => 'Buyer',
'address_state' => 'Shanghai',
'item_name1' => 'Ground Coffee 40 oz',
'receiver_email' => '[email protected]',
'item_name2' => 'Granola bars',
'payment_fee' => '0.98',
'quantity1' => '1',
'quantity2' => '5',
'receiver_id' => '937CP9PSMDS2A',
'txn_type' => 'cart',
'mc_gross_1' => '7.50',
'mc_currency' => 'USD',
'mc_gross_2' => '10.00',
'residence_country' => 'CN',
'test_ipn' => '1',
'transaction_subject' => '',
'payment_gross' => '20.00',
'ipn_track_id' => 'a9059421a1dd7',
)