(PHP 4, PHP 5, PHP 7, PHP 8)
posix_getgid — Return the real group ID of the current process
Return the numeric real group ID of the current process.
This function has no parameters.
Returns the real group id, as an int.
Example #1 posix_getgid() example
This example will print out the real group id, even once the effective group id has been 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
?>