php man page for getrandmax

GETRANDMAX(3)								 1							     GETRANDMAX(3)

getrandmax - Show largest possible random value

SYNOPSIS
       int getrandmax (void  )

DESCRIPTION
	Returns the maximum value that can be returned by a call to rand(3).

RETURN VALUES
	The largest possible random value returned by rand(3)

SEE ALSO
       rand(3), srand(3), mt_getrandmax(3).

PHP Documentation Group 													     GETRANDMAX(3)