Unbeatable Tic-Tac-Toe

New Game
Make Your Move
Select X Select
O O Select
X O X

Warning: DOMDocument::load(): expected '>' in /usr/local/www/apache24/data/tictactoe/games.xml, line: 28636 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Warning: DOMDocument::load(): Premature end of data in tag game line 28635 in /usr/local/www/apache24/data/tictactoe/games.xml, line: 28636 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('t8835', 'moves', '_X_OO_XOX') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('_X_OO_XOX', 't8835') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38