To send website form submissions to Telegram, post the form to a PHP handler on your server, validate the submitted fields, and have PHP call Telegram’s Bot API sendMessage method over HTTPS. Keep the bot token server-side. A manager must start a private chat with the bot first, or you can add the bot to a team group and send notifications there.
What you need before writing the PHP handler
- A Telegram bot created with @BotFather and its token stored in a server-side environment variable or protected configuration file.
- A recipient chat ID: the manager’s private chat ID, or the group’s chat ID.
- A PHP site with the cURL extension enabled.
- An HTML form that submits to a PHP endpoint using
method="post".
Do not put the bot token in JavaScript, HTML, or any code sent to a visitor’s browser. Telegram warns that anyone with the token has full control over the bot: Bots: An introduction for developers.
Choose where notifications should go
| Destination | Preparation | Trade-off |
|---|---|---|
| Private chat | Each manager must first message the bot, for example by sending /start. Configure that manager’s chat ID. |
Notifications go directly to an individual, but each recipient needs separate configuration. |
| Team group | Add the bot to the group, confirm it can post, and configure the group’s chat ID. | One shared destination is convenient for a team; group rate limits apply. |
Telegram bots cannot initiate private conversations with users. See Telegram’s bot introduction and sendMessage reference for recipient and method requirements.
Create the form and PHP endpoint
A standard HTML form can send its fields to a PHP handler as form data. For example:
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<form method="post" action="/contact-submit.php">
<label>Name <input name="name" required maxlength="100"></label>
<label>Email <input name="email" type="email" required maxlength="254"></label>
<label>Message <textarea name="message" required maxlength="3000"></textarea></label>
<button type="submit">Send</button>
</form>With a normal form POST, PHP makes submitted values available in $_POST. Field limits in the example are application choices, not Telegram requirements; set limits appropriate to your form and notification needs. PHP documents form handling in its $_POST reference.
Validate submissions before sending them
All submitted values are untrusted. Check that required fields exist, have the expected type and shape, and stay within sensible length limits. Reject malformed submissions rather than forwarding arbitrary input. PHP’s default filter_input filter performs no filtering by itself, so choose a specific validation filter or validate explicitly; see the PHP filter_input manual.
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For this example, the server-side handler can validate values and send a plain-text notification. Store TELEGRAM_BOT_TOKEN and TELEGRAM_CHAT_ID in server configuration, not in the web root or client code:
<?php
$token = getenv('TELEGRAM_BOT_TOKEN');
$chatId = getenv('TELEGRAM_CHAT_ID');
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
http_response_code(405);
exit('Method not allowed');
}
$name = trim($_POST['name'] ?? '');
$email = trim($_POST['email'] ?? '');
$message = trim($_POST['message'] ?? '');
if ($token === false || $token === '' || $chatId === false || $chatId === '') {
error_log('Telegram notification configuration is missing.');
http_response_code(500);
exit('We could not send your message. Please try again later.');
}
if ($name === '' || strlen($name) > 100 ||
!filter_var($email, FILTER_VALIDATE_EMAIL) || strlen($email) > 254 ||
$message === '' || strlen($message) > 3000) {
http_response_code(400);
exit('Check the form fields and try again.');
}
$text = "New website submissionn"
. "Name: {$name}n"
. "Email: {$email}n"
. "Message:n{$message}";
$ch = curl_init("https://api.telegram.org/bot{$token}/sendMessage");
curl_setopt_array($ch, [
CURLOPT_POST => true,
CURLOPT_POSTFIELDS => http_build_query([
'chat_id' => $chatId,
'text' => $text,
]),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_CONNECTTIMEOUT => 5,
CURLOPT_TIMEOUT => 10,
]);
$responseBody = curl_exec($ch);
$curlError = curl_error($ch);
$httpStatus = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($responseBody === false) {
error_log('Telegram transport error: ' . $curlError);
http_response_code(502);
exit('We could not send your message. Please try again later.');
}
$response = json_decode($responseBody, true);
if (!is_array($response) || ($response['ok'] ?? false) !== true) {
$description = is_array($response) ? ($response['description'] ?? 'Unknown API error') : 'Invalid JSON response';
error_log('Telegram API rejection (HTTP ' . $httpStatus . '): ' . $description);
http_response_code(502);
exit('We could not send your message. Please try again later.');
}
http_response_code(200);
echo 'Your message was sent.';This uses URL-encoded POST data. Telegram also accepts JSON POST data for methods such as sendMessage. The API endpoint pattern is https://api.telegram.org/bot<token>/METHOD_NAME; the method requires chat_id and text. The current reference, Bot API 10.3 dated August 24, 2026, sets the text length at 1–4096 characters after entity parsing. This example’s 3,000-character application cap leaves room for its labels and other notification text. See the Bot API overview and sendMessage documentation.
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Check the result and handle failures safely
A successful cURL transfer does not by itself mean Telegram accepted the message. First check for a cURL transport error, then decode the response JSON and treat the send as successful only if Telegram returns ok: true. A rejected API call may include a description; log a safe diagnostic for administrators, but do not return the token or submitted personal data in a public error message. Telegram explains its response format in the making requests section. PHP’s cURL manual documents response capture, POST options, and transfer-error checks, and Telegram provides a PHP cURL example.
- cURL returns
false: investigate server networking, DNS, TLS, and outbound HTTPS availability. Keep the user-facing response generic. - Telegram returns
ok: false: check the response description and confirm the token, chat ID, and bot access to the destination. - Telegram returns a rate-limit error: reduce repeated submissions and apply request controls rather than retrying rapidly.
Protect a public form from accidental or abusive messages
Each accepted submission can create a Telegram message. Add controls proportionate to the form’s exposure, such as server-side validation, a honeypot or challenge where appropriate, request throttling, and duplicate-submit protection. Telegram’s FAQ lists a limit of 20 messages per minute in a group and advises staying at or below one message per second in a single chat; rate excess can result in a 429 response. These are Telegram operating limits, not a guaranteed delivery rate. See the Telegram FAQ on bot limits.
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If you display submitted values on a web page later, escape them for HTML with PHP’s htmlspecialchars; that is output escaping, not a substitute for validating values. If you choose Telegram formatting modes instead of plain text, apply Telegram’s entity and escaping rules. For contact-form notifications, plain text avoids introducing markup parsing requirements.
Do you need a Telegram webhook?
No. This workflow sends an outbound request from your PHP form handler to Telegram’s Bot API, so it does not require an inbound Telegram webhook. Webhooks are for receiving updates from Telegram; the FAQ’s advice about a secret URL path for webhook requests applies to that separate setup. See the webhook security FAQ.
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