MadelineProto/old_docs/API_docs_v51/methods/updates_getChannelDifference.md

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---
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title: updates.getChannelDifference
description: updates.getChannelDifference parameters, return type and example
---
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## Method: updates.getChannelDifference
[Back to methods index](index.md)
### Parameters:
| Name | Type | Required |
|----------|:-------------:|---------:|
|channel|[InputChannel](../types/InputChannel.md) | Yes|
|filter|[ChannelMessagesFilter](../types/ChannelMessagesFilter.md) | Yes|
|pts|[int](../types/int.md) | Yes|
|limit|[int](../types/int.md) | Yes|
### Return type: [updates\_ChannelDifference](../types/updates_ChannelDifference.md)
### Example:
```
$MadelineProto = new \danog\MadelineProto\API();
if (isset($token)) { // Login as a bot
$this->bot_login($token);
}
if (isset($number)) { // Login as a user
$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);
}
$updates_ChannelDifference = $MadelineProto->updates->getChannelDifference(['channel' => InputChannel, 'filter' => ChannelMessagesFilter, 'pts' => int, 'limit' => int, ]);
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```
Or, if you're into Lua:
```
updates_ChannelDifference = updates.getChannelDifference({channel=InputChannel, filter=ChannelMessagesFilter, pts=int, limit=int, })
```