(PHP 4, PHP 5, PHP 7, PHP 8)
posix_getgroups — Return the group set of the current process
此函数没有参数。
Returns an array of integers containing the numeric group ids of the group
set of the current process, 或者在失败时返回 false.
示例 #1 Example use of posix_getgroups()
<?php
$groups = posix_getgroups();
print_r($groups);
?>以上示例的输出类似于：
Array
(
[0] => 4
[1] => 20
[2] => 24
[3] => 25
[4] => 29
[5] => 30
[6] => 33
[7] => 44
[8] => 46
[9] => 104
[10] => 109
[11] => 110
[12] => 1000
)