setMessageReaction — Botlify Cloud Docs

Use this method to change the chosen reactions on a message. Service messages of some types can't be reacted to. Automatically forwarded messages from a channel to its discussion group have the same available reactions as messages in the channel. Bots can't use paid reactions. Returns True on success.

Parameters

Parameter	Type	Required	Description
`chat_id`	Integer or String	Yes	Unique identifier for the target chat or username of the target bot, supergroup or channel in the format `@username`
`message_id`	Integer	Yes	Identifier of the target message. If the message belongs to a media group, the reaction is set to the first non-deleted message in the group instead.
`reaction`	Array of ReactionType	Optional	A JSON-serialized list of reaction types to set on the message. Currently, as non-premium users, bots can set up to one reaction per message. A custom emoji reaction can be used if it is either already present on the message or explicitly allowed by chat administrators. Paid reactions can't be used by bots.
`is_big`	Boolean	Optional	Pass True to set the reaction with a big animation

Example

PHP — Call setMessageReaction on Botlify Cloud

<?php
// ── Botlify Cloud .env — auto-injected, never hardcode secrets ──
$BOT_TOKEN     = getenv('BOT_TOKEN');     // Telegram bot token from @BotFather
$ADMIN_CHAT_ID = getenv('ADMIN_CHAT_ID'); // Your numeric admin Telegram user ID
$BOT_USERNAME  = getenv('BOT_USERNAME');  // Bot username without @

$resp = bot('setMessageReaction', [
    'chat_id' => $chatId,
    'message_id' => $messageId,
]);

if ($resp['ok'] ?? false) {
    $result = $resp['result']; // handle the response
}

Botlify Cloud Runtime
Credentials are auto-injected in .env — always load them with getenv(): BOT_TOKEN, ADMIN_CHAT_ID, BOT_USERNAME. Main database: database.db (SQLite, WAL mode). Runtime errors: error.log. Quick test: send to $ADMIN_CHAT_ID. Full details: Runtime Reference.