银联在线支付接口 php

<?php
// 银联支付配置
$merId = '你的商户号';
$merKey = '你的商户密钥';
$orderId = '订单号';
$amount = '订单金额';
$notifyUrl = '支付结果通知地址';

// 构建支付请求参数
$params = [
    'MerId' => $merId,
    'MerOrderNo' => $orderId,
    'TranAmt' => $amount,
    'CuryId' => 'CNY',
    'BgUrl' => $notifyUrl,
    'TermId' => '终端号',
    'ProdId' => '产品ID',
    'TranType' => '01',
    'TranFlow' => '0',
    'FeeType' => '0',
    'MerBgUrl' => $notifyUrl,
];

// 签名
$sign = sign($params, $merKey);
$params['Signature'] = $sign;

// 发送支付请求
$response = sendRequest('https://api.unionpay.com/v1/payment', $params);

if ($response['status'] == 'success') {
    echo '支付请求已成功发送';
} else {
    echo '支付请求发送失败';
}

// 签名函数
function sign($params, $merKey) {
    ksort($params);
    $str = '';
    foreach ($params as $key => $value) {
        $str .= "&$key=$value";
    }
    $str = substr($str, 1);
    $str .= "&key=$merKey";
    return md5($str);
}

// 发送请求函数
function sendRequest($url, $data) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $response = curl_exec($ch);
    curl_close($ch);
    return json_decode($response, true);
}
?>