PHP Manual: posix

Description

function posix_setgid(int $group_id): bool

Set the real 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. The appropriate order of function calls is posix_setgid() first, posix_setuid() last.

Note:
If the caller is a super user, this will also set the effective group id.

Parameters

group_id: The group id.

Return Values

Returns true on success or false on failure.

Examples

Example #1 posix_setgid() example

This example will print out the effective group id, once it is changed.

<?php
echo 'My real group id is '.posix_getgid(); //20
posix_setgid(40);
echo 'My real group id is '.posix_getgid(); //40
echo 'My effective group id is '.posix_getegid(); //40
?>

posix_setgid

Description

Parameters

Return Values

Examples

See Also