php 对接建行支付接口

<?php
// 建设银行支付接口配置
$merchant_id = 'your_merchant_id';
$merchant_key = 'your_merchant_key';
$notify_url = 'http://yourdomain.com/notify.php';

// 支付请求参数
$params = [
    'merchant_id' => $merchant_id,
    'order_id' => '123456',
    'amount' => '100.00',
    'currency' => 'CNY',
    'subject' => '商品名称',
    'notify_url' => $notify_url,
];

// 签名生成
$sign = generateSign($params, $merchant_key);

// 发送支付请求
$response = sendPaymentRequest($params, $sign);

if ($response['status'] == 'success') {
    echo '支付请求已发送';
} else {
    echo '支付请求失败';
}

function generateSign($params, $key) {
    ksort($params);
    $str = '';
    foreach ($params as $k => $v) {
        $str .= "&$k=$v";
    }
    $str = substr($str, 1) . "&key=$key";
    return strtoupper(md5($str));
}

function sendPaymentRequest($params, $sign) {
    $url = 'https://api.ccb.com/payment';
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($params));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    $response = curl_exec($ch);
    curl_close($ch);
    return json_decode($response, true);
}
?>