posix_setuid

(PHP 4, PHP 5, PHP 7)

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 that needs appropriate privileges (usually root) on the system to be able to perform this function.

参数

uid: The user id.

返回值

成功时返回 TRUE，或者在失败时返回 FALSE。

范例

Example #1 posix_setuid() example

This example will show the current user id and then set it to a different value.


<?php
echo posix_getuid()."\n"; //10001
echo posix_geteuid()."\n"; //10001
posix_setuid(10000);
echo posix_getuid()."\n"; //10000
echo posix_geteuid()."\n"; //10000
?>

参见

posix_setgid() - Set the GID of the current process
posix_seteuid() - Set the effective UID of the current process
posix_getuid() - Return the real user ID of the current process
posix_geteuid() - Return the effective user ID of the current process