#!/usr/bin/env php
Enter password: 
Warning: Use of undefined constant STDIN - assumed 'STDIN' (this will throw an Error in a future version of PHP) in /var/www/html/simplesamlphp/bin/pwgen.php on line 17

Warning: fgets() expects parameter 1 to be resource, string given in /var/www/html/simplesamlphp/bin/pwgen.php on line 17
Need at least one character for a password