posix_setegid
(PHP 4 >= 4.0.2, PHP 5)
posix_setegid — Set the effective GID of the current process
说明
bool posix_setegid
( int $gid
)
Set the effective group 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.
参数
- gid
-
The group id.
返回值
如果成功则返回 TRUE，失败则返回 FALSE。
范例
Example#1 posix_setegid() example
This example will print out the effective group id, once changed.
<?php
echo 'My real group id is '.posix_getgid(); //20
posix_setegid(40);
echo 'My real group id is '.posix_getgid(); //20
echo 'My effective group id is '.posix_getegid(); //40
?>
参见
- posix_getgrgid() for information on how to convert a group id into a useable group name
- posix_getgid() get real group id.
- posix_setgid() change the effective group id
