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Set the GID of the current process (PHP 4, PHP 5)
bool posix_setgid ( int gid )

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.


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



The group id.

Return Values

Returns TRUE on success or FALSE on failure.


Example 1885. posix_setgid() example

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

echo 'My real group id is '.posix_getgid(); //20
'My real group id is '.posix_getgid(); //40
echo 'My effective group id is '.posix_getegid(); //40

See Also
posix_getgrgid() for information on how to convert this into a useable group name
posix_getgid() get real group id.