posix_setuid

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

posix_setuid -- Set the UID of the current process

Description

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.

如果成功则返回 TRUE，失败则返回 FALSE。