setBusinessAccountUsername — Botlify Cloud Docs

Changes the username of a managed business account. Requires the can_change_username business bot right. Returns True on success.

Parameters

Parameter	Type	Required	Description
`business_connection_id`	String	Yes	Unique identifier of the business connection
`username`	String	Optional	The new value of the username for the business account; 0-32 characters

Example

PHP — Call setBusinessAccountUsername 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('setBusinessAccountUsername', [
    'business_connection_id' => $userId,
]);

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.