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MadelineProto/docs/API_docs/methods/account_checkUsername.md
2018-03-20 19:57:36 +01:00

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---
title: account.checkUsername
description: Check if this username is available
---
## Method: account.checkUsername
[Back to methods index](index.md)
Check if this username is available
### Parameters:
| Name | Type | Required | Description |
|----------|---------------|----------|-------------|
|username|[CLICK ME string](../types/string.md) | Yes|The username to check|
### Return type: [Bool](../types/Bool.md)
### Can bots use this method: **NO**
### Errors this method can return:
| Error | Description |
|----------|---------------|
|USERNAME_INVALID|The provided username is not valid|
### MadelineProto 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', ]);
```
### [PWRTelegram HTTP API](https://pwrtelegram.xyz) example (NOT FOR MadelineProto):
### 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', })
```