Unbeatable Tic-Tac-Toe

Select	X	Select
Select	O	Select
O	Select	X

Warning: DOMDocument::load(): Document is empty in /usr/local/www/apache24/data/tictactoe/games.xml, line: 1 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Fatal error: Uncaught Error: Call to a member function getElementsByTagName() on null in /usr/local/www/apache24/data/tictactoe/index.php:38 Stack trace: #0 /usr/local/www/apache24/data/tictactoe/index.php(113): update_element('t1811', 'moves', '_X__O_O_X') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('_X__O_O_X', 't1811') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38