POSIX 函数
PHP Manual

posix_setuid

(PHP 4, PHP 5, PHP 7)

posix_setuidSet 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 函数
PHP Manual