PHP Notice: Undefined variable: plan_interval_unit in /home/Bso1kb/prog.php on line 3
PHP Notice: Undefined variable: plan_interval_unit in /home/Bso1kb/prog.php on line 3
PHP Notice: Undefined variable: interval_spec in /home/Bso1kb/prog.php on line 4
PHP Fatal error: Uncaught Exception: DateInterval::__construct(): Unknown or bad format () in /home/Bso1kb/prog.php:4
Stack trace:
#0 /home/Bso1kb/prog.php(4): DateInterval->__construct('')
#1 {main}
thrown in /home/Bso1kb/prog.php on line 4