php 在线支付接口

<?php
// 引入支付宝 SDK
require_once 'alipay-sdk/AopSdk.php';

// 初始化支付宝客户端
$aop = new \AopClient();
$aop->gatewayUrl = 'https://openapi.alipay.com/gateway.do';
$aop->appId = 'your_app_id';
$aop->rsaPrivateKey = 'your_private_key';
$aop->alipayrsaPublicKey = 'alipay_public_key';
$aop->apiVersion = '1.0';
$aop->signType = 'RSA2';
$aop->postCharset = 'UTF-8';
$aop->format = 'json';

// 创建支付请求
$request = new \AlipayTradePagePayRequest();
$request->setReturnUrl('http://yourdomain.com/return_url.php');
$request->setNotifyUrl('http://yourdomain.com/notify_url.php');
$request->setBizContent(json_encode([
    'subject' => '测试商品',
    'out_trade_no' => '123456789',
    'total_amount' => '0.01',
    'product_code' => 'FAST_INSTANT_TRADE_PAY'
]));

// 发起支付请求
$response = $aop->pageExecute($request);

// 输出支付页面
echo $response;
?>