(PHP 4 >= 4.0.2, PHP 5)
posix_seteuid — Set the effective UID of the current process
Set the real user ID of the current process. This is a privileged function and needs appropriate privileges (usually root) on the system to be able to perform this function.
The user id.
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.