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() - Return info about a group by group id for information on how to convert a group id into a useable group name
posix_getgid() - Return the real group ID of the current process get real group id.
posix_setgid() - Set the GID of the current process change the effective group id