MadelineProto/old_docs/API_docs_v38/methods/channels_checkUsername.md

title	description
channels.checkUsername	channels.checkUsername parameters, return type and example

Method: channels.checkUsername

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Parameters:

Name	Type	Required
channel	InputChannel	Yes
username	string	Yes

Return type: Bool

Can bots use this method: NO

Errors this method can return:

Error	Description
CHANNEL_INVALID	The provided channel is invalid
CHAT_ID_INVALID	The provided chat id is invalid
USERNAME_INVALID	The provided username is not valid

Example:

$MadelineProto = new \danog\MadelineProto\API();
$MadelineProto->session = 'mySession.madeline';
if (isset($number)) { // Login as a user
    $MadelineProto->phone_login($number);
    $code = readline('Enter the code you received: '); // Or do this in two separate steps in an HTTP API
    $MadelineProto->complete_phone_login($code);
}

$Bool = $MadelineProto->channels->checkUsername(['channel' => InputChannel, 'username' => 'string', ]);

Or, if you're using the PWRTelegram HTTP API:

As a user:

POST/GET to https://api.pwrtelegram.xyz/userTOKEN/channels.checkUsername

Parameters:

channel - Json encoded InputChannel

username - Json encoded string

Or, if you're into Lua:

Bool = channels.checkUsername({channel=InputChannel, username='string', })