# swoole_http_request->$post
HTTP POST参数，格式为数组。
~~~
echo $request->post['hello'];
~~~
> POST与Header加起来的尺寸不得超过package_max_length的设置，否则会认为是恶意请求
POST参数的个数最大不超过128个
| Swoole流程 |
|-----|
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- 备用：已移除的历史特性
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