(PHP 4, PHP 5, PHP 7, PHP 8)
posix_getgroups — Return the group set of the current process
Gets 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.
Example #1 Example use of posix_getgroups()
<?php
$groups = posix_getgroups();
print_r($groups);
?>
以上例程的输出类似于：
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
)