MadelineProto/docs/API_docs/methods/account_checkUsername.md

title	description
account.checkUsername	Check if this username is available

Method: account.checkUsername

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Check if this username is available

Parameters:

Name	Type	Required	Description
username	CLICK ME string	Yes	The username to check

Return type: Bool

Can bots use this method: NO

Errors this method can return:

Error	Description
USERNAME_INVALID	The provided username is not valid

Example:

if (!file_exists('madeline.php')) {
    copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
include 'madeline.php';

// !!! This API id/API hash combination will not work !!!
// !!! You must get your own @ my.telegram.org !!!
$api_id = 0;
$api_hash = '';

$MadelineProto = new \danog\MadelineProto\API('session.madeline', ['app_info' => ['api_id' => $api_id, 'api_hash' => $api_hash]]);
$MadelineProto->start();

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

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

As a user:

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

Parameters:

username - Json encoded string

Or, if you're into Lua:

Bool = account.checkUsername({username='string', })