---
layout: docs
title: append
id: class.Facebook.HackCodegen._Private.StrBuffer.append
docid: class.Facebook.HackCodegen._Private.StrBuffer.append
permalink: /docs/reference/class.Facebook.HackCodegen._Private.StrBuffer.append/
---
# Facebook\\HackCodegen\\_Private\\StrBuffer::append()




``` Hack
public function append(
  mixed $value,
): void;
```




## Parameters




- ` mixed $value `




## Returns




+ ` void `