php man page for posix_getgid

POSIX_GETGID(3) 							 1							   POSIX_GETGID(3)

posix_getgid - Return the real group ID of the current process

SYNOPSIS
       int posix_getgid (void  )

DESCRIPTION
	Return the numeric real group ID of the current process.

RETURN VALUES
	Returns the real group id, as an integer.

EXAMPLES
       Example #1

	      posix_getgid(3) 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
	      ?>

SEE ALSO
       posix_getgrgid(3), posix_getegid(3), posix_setgid(3), POSIX man page GETGID(2).

PHP Documentation Group 													   POSIX_GETGID(3)