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Build a Yii2 console controller with separate actions for checking Telegram bot status and changing its update-delivery configuration. You can then run maintenance through routes such as yii telegram/status, without mixing those tasks into the bot’s update handler. Keep the bot token in protected configuration and never print it: Telegram’s Bot API places the token in the HTTPS request path, where careless URL logging could expose it.
How to create a Yii2 console command
Yii2 console applications support background and maintenance tasks. A console controller exposes public actions as command routes invoked through the project’s yii script. For example, an action named actionStatus() in TelegramController is available as yii telegram/status. See the Yii 2.0 Guide to Controllers for controller and action conventions.
Put the controller in the application’s console command namespace and extend yiiconsoleController. Keep API-client creation and token handling in a shared application component or service so each action does not duplicate HTTP details.
<?php
namespace appcommands;
use yiiconsoleController;
class TelegramController extends Controller
{
public function actionStatus()
{
// Call getMe and getWebhookInfo using the application's Bot API client.
// Print safe status fields only; never expose the token.
}
public function actionSetWebhook($url)
{
// Validate the deployment URL, then call setWebhook through the client.
}
public function actionRemoveWebhook()
{
// Call deleteWebhook before switching to a long-polling worker.
}
}This is a framework-level outline, not tested, drop-in code for a particular Telegram PHP SDK. Adapt the API calls to the client already used by your application. Yii also supports configurable command options through options() and command-line values such as --optionName=value; consult the Yii controller guide for details.
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Which maintenance actions should the controller expose?
Check identity and webhook status
A status action can call Telegram’s getMe to confirm the bot identity and getWebhookInfo to inspect update delivery. Report only fields operators need: whether a webhook URL is configured, the number of pending updates, and the latest delivery error information when present. An empty webhook URL means the bot is using getUpdates.
Telegram documents the returned webhook information and the getWebhookInfo, setWebhook, and deleteWebhook methods in its Bot API documentation.
Set a webhook deliberately
A set-webhook action should accept or obtain the deployment URL, validate that it is the intended HTTPS endpoint, and call setWebhook. Telegram’s webhook requirements include a valid SSL certificate, supported ports, no redirects, and a domain that matches the certificate’s common name (CN); its webhook guide says TLS 1.2 or later is supported. Review the current Telegram Bot FAQ and webhook guide before changing production routing.
Remove a webhook before switching to polling
A remove-webhook action should call deleteWebhook when the deployment is moving back to long polling. Make the operational effect clear before executing the change: Telegram does not allow getUpdates polling while a webhook is configured, and the two delivery methods cannot be active together.
How do webhooks and long polling differ?
| Operational axis | Long polling (getUpdates) |
Webhook (setWebhook) |
|---|---|---|
| Delivery | Your process asks Telegram for updates and advances its offset. | Telegram sends updates to the configured HTTPS endpoint. |
| Infrastructure | Does not require a public webhook endpoint, but a polling process must remain available. | Requires a reachable HTTPS endpoint with valid certificate configuration. |
| Compatibility | Cannot be used while an outgoing webhook is configured. | Cannot be used simultaneously with getUpdates. |
| Operational checks | Advance the offset and confirm updates to avoid repeatedly receiving unconfirmed updates. | Use getWebhookInfo to inspect pending updates and recent delivery errors. |
Telegram describes the two methods and their exclusivity in its Bot API documentation and FAQ. Choose one delivery method for a bot at a time, and make any transition an explicit deployment operation rather than an incidental side effect of a status check.
What should a maintenance command report and protect?
- Keep credentials out of output. Store the token in protected application configuration or environment-specific secret storage. Do not print it or include it in logs; the token appears in Telegram API request paths.
- Make status actionable. Show the configured webhook URL or that it is empty, pending update count, and latest delivery error when Telegram supplies one.
- Guard configuration changes. Consider a confirmation prompt or dry-run option for disruptive actions, and explain whether the action sets or removes the webhook.
- Signal failures to automation. Return a nonzero exit status when the Telegram API call fails so deployment tooling can detect the problem.
These are implementation recommendations for a reliable maintenance command; exact output, scheduling, secret storage, and client-library calls depend on your application.
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What changes when the bot uses long polling?
When polling, keep track of the last processed update. Telegram’s FAQ gives the next offset as the last processed update_id plus one. Advancing it acknowledges earlier updates, which helps avoid repeatedly receiving updates that have already been handled. Telegram retains updates for no longer than 24 hours while they await receipt, so a maintenance process cannot recover an unlimited backlog.
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Before starting the polling worker, remove any configured webhook. If delivery is failing, inspect the webhook status first when applicable, then decide whether the endpoint needs repair or the bot should be deliberately moved to polling.
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