# swoole_http_server->setGlobal
设置此选项后，服务器会自动将请求的GET、POST、COOKIE等数据设置到PHP的$_GET/$_POST/$_COOKIE等超全局变量中。
~~~
swoole_http_server->setGlobal(int $flags = HTTP_GLOBAL_ALL, int $flags = HTTP_GLOBAL_GET | HTTP_GLOBAL_POST);
~~~
- 默认为HTTP_GLOBAL_ALL表示设置所有的超全局变量
> 此方法是为了兼容原有的代码，使用超全局变量是不良好的编码规范，不推荐使用
使用超全局变量在异步非阻塞的模式下可能存在不可重入问题
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