WhatsApp Cloud Api - 使用 php 的页眉、正文和页脚模板消息

Question

我正在尝试使用 Whatsapp Cloud API 发送 WhatsApp 模板消息。我收到此错误：

"error": {
        "message": "(#100) The parameter messaging_product is required.",
        "type": "OAuthException",
        "code": 100,
        "fbtrace_id": "AcwogNVBOUBxkwsF7NkMiWj"
    }

我转换为 PHP 并通过 cURL post 发送的请求是：

// Template parameters
$header_text_string = "This is a header";
$text_string = "this is the body";
$footer_text_string = "This is a footer";

// API endpoint
$phone_number_id = "...";
$api_url = 'https://graph.facebook.com/v17.0/' . $phone_number_id . '/messages';

// Function to send an HTTP POST request using cURL
function sendHttpPostRequest($url, $data, $access_token) {
    
    $headers = array(
        'Content-Type: application/json',
        'Authorization: Bearer ' . $access_token,
    );
    
    $ch = curl_init($url);
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data));
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    
    $response = curl_exec($ch);
    
    if ($response == false) {
        $result = "cURL Error: " . curl_error($ch) . " - ".curl_errno($ch);
        return($result);
    }else{
        $resultDecode = json_decode($response, false);
        if($resultDecode != null){
            $result = $resultDecode;
        }
        return($result);
    }
    
    curl_close($ch);
}


// Send WhatsApp template messages to each recipient
foreach ($phoneNumbers as $recipient_phone_number) {
    $template_data = array(
        'messaging_product' => 'whatsapp',
        'recipient_type' => 'individual',
        'to' => $recipient_phone_number,
        'type' => 'template',
        'template' => array(
            'name' => $template_name,
            'language' => array(
                'code' => 'en_US'
            ),
            'components' => array(
                array(
                    "type" => "header",
                    "parameters" => array(
                        array(
                            "type" => "text",
                            "text" => $header_text_string
                        )
                    )
                ),
                array(
                    'type' => 'body',
                    'parameters' => array(
                        array(
                            'type' => 'text',
                            'text' => $text_string
                        )
                    )
                )
            )
        )
    );

    // Convert the template data to JSON
    $json_data = json_encode($template_data);
    
    // Send the HTTP POST request to the API endpoint
    $response = sendHttpPostRequest($api_url, $json_data, $access_token);

    
    // Convert the response object to a JSON string to debug if needed
    $response_json = json_encode($response);

    // Output the JSON response
    echo "API Response: " . $response_json . "<br>";
}

我环顾四周，发现非常相似或有些相关的帖子：here、here、here等，但我似乎有我的代码，因为它在答案中，我仍然得到这个。我错过了什么？

另外，如果重要的话，现在我正在用邮递员测试它（根据需要设置标题和所有内容，但仍然什么也没有）。