MadelineProtoDocs/old_docs/API_docs_v91/methods/messages_checkChatInvite.md

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---
title: messages.checkChatInvite
description: Check if an invitation link is valid
image: https://docs.madelineproto.xyz/favicons/android-chrome-256x256.png
---
# Method: messages.checkChatInvite
[Back to methods index](index.md)
Check if an invitation link is valid
### Parameters:
| Name | Type | Description | Required |
|----------|---------------|-------------|----------|
|hash|[string](../types/string.md) | The invite link in t.me/joinchat/aflakf format | Yes|
### Return type: [ChatInvite](../types/ChatInvite.md)
### Can bots use this method: **NO**
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### MadelineProto Example ([now async for huge speed and parallelism!](https://docs.madelineproto.xyz/docs/ASYNC.html)):
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```php
if (!file_exists('madeline.php')) {
copy('https://phar.madelineproto.xyz/madeline.php', 'madeline.php');
}
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define('MADELINE_BRANCH', '');
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include 'madeline.php';
$MadelineProto = new \danog\MadelineProto\API('session.madeline');
$MadelineProto->start();
$ChatInvite = $MadelineProto->messages->checkChatInvite(['hash' => 'string', ]);
```
Or, if you're into Lua:
```lua
ChatInvite = messages.checkChatInvite({hash='string', })
```
### Errors this method can return:
| Error | Description |
|----------|---------------|
|INVITE_HASH_EMPTY|The invite hash is empty|
|INVITE_HASH_EXPIRED|The invite link has expired|
|INVITE_HASH_INVALID|The invite hash is invalid|