MadelineProto/docs/API_docs/methods/help_getAppChangelog.md
Daniil Gentili 7a0153a139
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---
title: help.getAppChangelog
description: help.getAppChangelog parameters, return type and example
---
## Method: help.getAppChangelog
[Back to methods index](index.md)
### Parameters:
| Name | Type | Required |
|----------|---------------|----------|
|prev\_app\_version|[string](../types/string.md) | Yes|
### Return type: [Updates](../types/Updates.md)
### Can bots use this method: **NO**
### 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();
$Updates = $MadelineProto->help->getAppChangelog(['prev_app_version' => 'string', ]);
```
Or, if you're using the [PWRTelegram HTTP API](https://pwrtelegram.xyz):
### As a user:
POST/GET to `https://api.pwrtelegram.xyz/userTOKEN/help.getAppChangelog`
Parameters:
prev_app_version - Json encoded string
Or, if you're into Lua:
```
Updates = help.getAppChangelog({prev_app_version='string', })
```