php调用支付接口

<?php
// 假设使用的是某第三方支付服务提供商的API
$apiKey = 'your_api_key';
$apiSecret = 'your_api_secret';
$orderId = '123456';
$amount = 100.00;
$currency = 'USD';

// 构建支付请求参数
$params = [
    'order_id' => $orderId,
    'amount' => $amount,
    'currency' => $currency,
    // 其他必要参数
];

// 签名
$signature = sign($params, $apiSecret);

// 发送支付请求
$response = sendRequest('https://api.paymentprovider.com/pay', $params, $signature);

if ($response['status'] == 'success') {
    echo "支付成功";
} else {
    echo "支付失败: " . $response['message'];
}

function sign($params, $secret) {
    // 签名逻辑
    // 参考支付服务提供商的签名文档
}

function sendRequest($url, $params, $signature) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($params));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, [
        'Content-Type: application/x-www-form-urlencoded',
        'Authorization: Signature ' . $signature
    ]);

    $response = curl_exec($ch);
    curl_close($ch);

    return json_decode($response, true);
}
?>