Notice: Undefined variable: finished in H:\Apache24\htdocs\test4\4\example4-17.php on line 2

Fatal error: Uncaught Error: Call to undefined function getnext() in H:\Apache24\htdocs\test4\4\example4-17.php:2 Stack trace: #0 {main} thrown in H:\Apache24\htdocs\test4\4\example4-17.php on line 2