array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'zh', ), 'this' => array ( 0 => 'function.posix-setegid.php', 1 => 'posix_setegid', 2 => 'Set the effective GID of the current process', ), 'up' => array ( 0 => 'ref.posix.php', 1 => 'POSIX 函数', ), 'prev' => array ( 0 => 'function.posix-pathconf.php', 1 => 'posix_pathconf', ), 'next' => array ( 0 => 'function.posix-seteuid.php', 1 => 'posix_seteuid', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/posix/functions/posix-setegid.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

posix_setegid

(PHP 4 >= 4.0.2, PHP 5, PHP 7, PHP 8)

posix_setegid — Set the effective GID of the current process

说明

posix_setegid(int $group_id): bool

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

group_id

The group id.

返回值

成功时返回 true， 或者在失败时返回 false。

示例

示例 #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