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# posix_setuid

(PHP 3 >= 3.0.13, PHP 4, PHP 5)

posix_setuid -- Set the UID of the current process

## 说明

bool posix_setuid ( int uid )

Set the real user ID of the current process. This is a privileged function and you need appropriate privileges (usually root) on your system to be able to perform this function.

## 参数

`uid`

  The user id.

## 返回值

如果成功则返回 `TRUE`，失败则返回 `FALSE`。

## 参见

posix_setgid()

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