header('Content-Type: application/json; charset=utf-8');

$token = "5306003979:AAEPK2NhlxW";

$chat_id = "497358";

$txt = !empty($_POST["text"]) ? htmlspecialchars(trim($_POST["text"])) : "";

// 简单校验输入

if (empty($txt)) {

    http_response_code(400);

    echo json_encode(["message" => "Text is required"]);

    exit;

}

function telegramPost($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);

    curl_setopt($ch, CURLOPT_TIMEOUT, 10);

    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // 生产环境请启用证书验证

    $response = curl_exec($ch);

    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);

    curl_close($ch);

    return [

        'code' => $httpCode,

        'body' => json_decode($response, true)

    ];

}

$result = telegramPost("https://api.telegram.org/bot{$token}/sendMessage", [

    'chat_id' => $chat_id,

    'text' => $txt,

    'parse_mode' => 'html'

]);

// 检查 Telegram API 是否返回 ok=true 且 HTTP 状态码正常（2xx）

if ($result['code'] >= 200 && $result['code'] < 300 && !empty($result['body']['ok']) && $result['body']['ok'] === true) {

    http_response_code(200);

    echo json_encode(["message" => "ok", "sent_at" => date('c')]);

} else {

    http_response_code(500);

    $errorDesc = $result['body']['description'] ?? 'Unknown Telegram API error';

    echo json_encode(["message" => "Telegram failed: {$errorDesc}", "http_code" => $result['code']]);

}

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jQuery("form").submit(function (e) {

    e.preventDefault(); // 阻止默认提交

    var form_data = jQuery(this).serialize();

    jQuery.ajax({

        type: "POST",

        url: "js/send_to_telegram.php",

        data: form_data,

        dataType: "json",

        success: function (result) {

            donemodal.style.display = "block";

            console.log("Success:", result);

        },

        error: function (jqXHR, textStatus, errorThrown) {

            let errorMsg = "Submission failed.";

            if (jqXHR.responseJSON && jqXHR.responseJSON.message) {

                errorMsg = jqXHR.responseJSON.message;

            } else if (textStatus === "timeout") {

                errorMsg = "Request timed out. Please check your connection.";

            } else if (textStatus === "error") {

                errorMsg = "Server returned an error response.";

            }

            console.error("AJAX Error:", textStatus, errorThrown, jqXHR.responseJSON);

            document.getElementById("error-message").textContent = errorMsg;

            errormodal.style.display = "block";

        }

    });

});