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---
title: checkAuthCode
description: Checks authentication code. Works only when authGetState returns authStateWaitCode. Returns authStateWaitPassword or authStateOk on success
---
## Method: checkAuthCode
[Back to methods index ](index.md )
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YOU CANNOT USE THIS METHOD IN MADELINEPROTO
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Checks authentication code. Works only when authGetState returns authStateWaitCode. Returns authStateWaitPassword or authStateOk on success
### Params:
| Name | Type | Required | Description |
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|----------|---------------|----------|-------------|
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|code|[string](../types/string.md) | Yes|Verification code from SMS, Telegram message, voice call or flash call|
|first\_name|[string](../types/string.md) | Yes|User first name, if user is yet not registered, 1-255 characters|
|last\_name|[string](../types/string.md) | Yes|Optional user last name, if user is yet not registered, 0-255 characters|
### Return type: [AuthState](../types/AuthState.md)
### Example:
```
$MadelineProto = new \danog\MadelineProto\API();
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if (isset($token)) { // Login as a bot
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$MadelineProto->bot_login($token);
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}
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if (isset($number)) { // Login as a user
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$sentCode = $MadelineProto->phone_login($number);
echo 'Enter the code you received: ';
$code = '';
for ($x = 0; $x < $sentCode['type']['length']; $x++) {
$code .= fgetc(STDIN);
}
$MadelineProto->complete_phone_login($code);
}
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$AuthState = $MadelineProto->checkAuthCode(['code' => 'string', 'first_name' => 'string', 'last_name' => 'string', ]);
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```
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Or, if you're using the [PWRTelegram HTTP API ](https://pwrtelegram.xyz ):
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### As a bot:
POST/GET to `https://api.pwrtelegram.xyz/botTOKEN/madeline`
Parameters:
* method - checkAuthCode
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* params - `{"code": "string", "first_name": "string", "last_name": "string", }`
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### As a user:
POST/GET to `https://api.pwrtelegram.xyz/userTOKEN/checkAuthCode`
Parameters:
code - Json encoded string
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first_name - Json encoded string
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last_name - Json encoded string
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Or, if you're into Lua:
```
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AuthState = checkAuthCode({code='string', first_name='string', last_name='string', })
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```